Yes, I will be offering a few things like this in the near future. The big issue is packaging; when you dedome the emitter it becomes much more fragile due to the exposed phosphor, bond wires, etc. I will tape a hard "dome" over the top of the star. I also will test every emitter after a dedome to ensure functionality.
Why not just do what IOS do? Put the emitters in film-canisters, or perhaps short sections of heavy cardboard tube? With the latter you can have two sizes, one for 20mm stars and one for 16mm stars.
Petrol bath to remove the dome, clean with isopropyl alcohol, spray a bit of LEDseal into a cup, pick up some liquid LEDseal with the end of a chopstick, apply drop onto top of naked LED.
Please restock that holster you had. I bought one with a battery order to check it out. It fits the Solarforce L2 style lights perfectly. Will order many the next time there in. Glad to see you’re able to restock so quickly on those Panasonics.