Ability to tailstand on a non-ferrous flat, level surface.
A forward -clicky tail switch that offers half-push, momentary-ON before latching. But that precludes a tail magnet, which is also useful. Don’t know how to overcome that. Any such thing as a side clicky?
CRI high enough to render sometimes subtle variations of wiring insulation colors very well.
Onboard charging, provided it terminates correctly, and the waterproofing cover is robust.