What you have quoted was a response to Looney suggestion that JLI should remain as is but move to CP 2.
That's a fair point, however you're usually asking to discuss only what you have posted and not implications by whom you quote or what others discussed before you. By these measures, please stick to what you demand from others. I have not written anything about moving JLI to CP2.
At CP 2, with 100 sec CD, (no infiltration) trying to delay in order to use JLI as core infantry does not seem be very viable.
I on the other hand have suggested that these unit should become more focused on utility than damage and become support units with lower Pop/cost.
Which suggestion do you agree with?
JLI are okay as they are at the moment, there is no big reason to change them if there was the chance to do so. They actually fit their historic role quite well. Making the critical kill a timed ability as you suggested might be a good way to go, but obviously has to be tested.
The flare change seem to rather hard, they CD on rearming the flare should simply be significantly increased now the ability is hardly used.
Alternatively it could be replaced by conscript's flare with no damage or low cost (or no cost) "sniper" flares launched from trucks.
The flare change was necessary and good. It required no input and generated a massive sight bonus for axis, especially regarding the good availability of rocket artillery. The time to place them could be shortened though. Not sure what you mean by "sniper" flare. The one the Soviet sniper and Panzerfusiliere have?