thats a server side command, just as it was before. perhaps the servers you played in yesterday had forcechasecam on. there are a shit ton of commands now that will give you the same effect, as soon as someone releases an updated command list i will link it.
hitboxes are perfect now. they not ahead of the player as they USED to be. see video:
that is how hitboxes were prior to the update. cl_interpolate used to be used for more precision but all of the leagues banned it.
as for weapon damage. on the important weapons such as the awp, m4, ak, deagle, etc... it's all still the same. a dink with the m4 still does 80-90dmg which i wish they would have fixed, but meh, the ak does the job in one shot.
but yes, it does blow that you cant change your name in-game. im sure coders will find a way soon.