As of now, Reach beats Halo 4 in terms of population.
I guess people actually csred about the game, but 2 years down the road I believe Reach simply made people realise they were screaming to deaf ears, just like now.
Halo 4 probably won't get fixed. Players will still be able to spawn with Promethean Vision and a mini-Shotgun, and I believe Ordnance Drops will remain to be arbitrary and up to luck.