I have a Tri WYOS build completed in a 4C with 3x18650 and shark board powering it. Should I leave it or should I carefully pry up the stars and replace them with the new SSC P4 leds?
I would leave it. You have a nice setup and when you like it, why changing?
You can loose a good tint. Compare the specs of the Leds. According to, you can gain a little more brightness but I guess it's not mentioning visible with the pure eyes. Also the beamshape will change.
I would mod. a new light, that's my way.Keeping proofen and reliable setups and realize new ideas with new hosts.