Long press for momentary Turbo Strobe is a great option … 
WOW , another vote for quick turbo.
No need for Eco/Moon? That’s new!
Sorry for the confusion earlier. It actually has two tail switches (just like the SF26)
I got you! Quick turbo!
OMG Anduril?
That’s really helpful, thank you!
And release to turn it off? This exactly what we have now.
So we need to add a quick turbo
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Strobe is not essential.
The point of strobe is to disorientate someone. However, it is more effective to hit someone with turbo and then turn the light off, which gives them a big blind spot.
Necessary: Turbo and a low mode.
Optional: Strobe
Bad: A bunch of other modes
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It is certainly easy to miss the UI when you focus only on one word. The UI I described would actually be more similar to novatac, but without the drawback of accidental reprogramming, etc. Read it again and realize how tactical it could actually be, as many of the “tactical” users here aren’t really so.
Tactical denotes situational adaptability, with ease of access to different modes with as little mechanical input as possible, which is why planning and configuring should be PREPPED PRIOR to the usage situation. Either that or KISS, single or high/low.
Strobe is stupid, and as another member mentioned, a momentary turbo flash leaves a good blind spot without the trackability of a constant pattern. Hence why I referred to a “user defined momentary tactical mode.” Whatever you choose to put there, it’ll be the same no matter where you press and hold from.
Sometimes, the most tactical use of a flashlight is to not.
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Definitely give some consideration to a voltage display, ideally via four LEDs like Olight and Nitecore have been doing. It’s no good having a single LED that’s green for >20%.
Personally I would like a moonlight mode, but that’s because I want that on all my lights. It should not be memorised. Hold the mode button and click power for moonlight would make it easily accessible but requiring a deliberate choice. Pressing mode again should allow stepping up from moonlight into the L M H rotation.
Lastly, consider having a daily mode and a tactical mode, a purely tactical light is going to have a limited audience.
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@Barry0892 Thanks for clarifying the switch setup.
It’s my personal opinion that if you’re interested in creating a new, truly “tactical flashlight” for those who actually need such a product including those in law enforcement and military personnel and even for personal safety & protection, that two switches sharing a small tailcap is not the type of setup I would want. The probability for error and giving away tactical advantage is too great. A single tailcap switch can accommodate the necessary functionality for tactical needs.
Again in my personal opinion, please lose the term “turbo” when describing the functions of this type of flashlight.
In agreement with the entirety of @1c0n0cl4st’s post (#3), I much prefer the term “full lumen output” or maximum output. Speaking for myself, the so-called turbo mode of most, if not all LED flashlights, with very few exceptions, may not last long enough for the needs of operators in the field. In fact, the “high mode’s” maximum brightness should be carefully determined with longevity considered.
I also fully agree that a flashlight’s max brightness is way more affective for disorienting a human than the (strobe mode of any flashlight that I’m aware exists). From personal & careful, albeit non-scientific testing on willing subjects, we found that the sudden blast from just an 800 lumen, 1" bezel, balanced beam flashlight, followed by several seconds off, then another blast (based on the test subjects reaction time), and so on, was more effective than every one of the variable and constant-frequency strobe flashlights we used.
So yes, a single switch on the tailcap with a press & release momentary function would be my preference. That along with a hidden, single, user-defined low mode and potted electronics would be my preferences. Thank you @Barry0892 for asking our opinions!
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Nope. No need for those. Keep it simple. I’ve reviewes probably 2 dozen ‘tactical’ lights now and maybe 5 have what I consider actual tactical UIs.
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Could you maybe clarify for me, what you think a Tactical UI is?
I am still struggling with that name and why some people need a different UI than regulars
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A tactical (I actually like the term ‘duty’) UI is a simple, uncluttered mode set with access to an instant-on strobe and maximum brightness beyond a double click and even a press and hold. The 2 switch setup helps this, but Olight and I think Speras and Nitecore have setups with dual-stage switches (half press and full press for dofferent functions) or a configurable UI (Fenix’s ACE).
A duty UI must have:
Instant strobe (less important than instant Turbo)
Instant Turbo
Optional multiple brightness levels. I say thst because they’re optional and a pure tactical light like a WLM doesn’t need that.
Olight has a simple Low-Turbo on the Warrior X4 that i like amd the Odins have this also.
For a Duty UI, 3 modes is enough for everything. Low, Med, High. Some incorporate a Turbo in there too. Basically the purpose is a light that caters to the need of the operator at all times in all scenarios.
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The TM03 does that well, as does the ED20-T.
Thanks for all the suggestions. Now we have a new idea for the UI:
Long press to enter Strobe mode (from either ON or OFF), release to turn it off.
Double-click the secondary switch to access full brightness, single click to return.
Does this UI make sense? What do you think?
Check out the Nitecore TM03 and/or the Lumintop ED20-T for already “established” UIs. Should be a good start…
Not for a “truly tactical” UI.
Simply labeling something “tactical” does not make it tactical!
How about a bluetooth connection to the driver and a UI that everybody can set how he/she wants it? 
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My idea of an awesome recipe for an excellent Tac Type flashlight. I carry this light regularly and have it configured to primary tail switch … full press max output and monentary. Secondary flat switch … full press stobe and momentary. Excellent build with high reliability.
No. Turbo and Strobe should be accessible at any time with a single click or press. A long press is acceptable. If you want those other features, go with a dyal mode UI like Klarus (one of my favorites) uses.