My .02€:
Kill messages should stay. In addition to x killed me and I killed x, I like seeing "community kills" if the darned basterd who dared to shoot me gets mortared seconds later. If I want to shoot at and be shot by Anonymous, I could just as well play singleplayer.
Hit indicator. At least it tells me in an early war tank-to-tank fight if I do any damage. You know, the fights where 1s1k is not so likely. Also, without hit indicator, airplanes will RAEP anti-aircraft defenses even more thoroughly than they do now. Plus, for a n00b, the hit indicator is a very good feedback on accuracy against infantry. Regarding its encouragement towards blind-firing and/or into fog, I find the argument shaky. As long as you can use the "looking past target" exploit to grow your view distance 40%, hit indicator is hardly game-breaking.
Yes, hit indicator "tells" you if the blindly thrown Holy Hand Grenade of Antioch found enemies, who, being naughty in My sight, should snuff it, but IRL you would probably hear the screaming of the wounded or something at such close distance; in FH2 everyone stays mute like a morphine-overdosed samurai until at the moment of death you shout an oneliner straight out of Commando comics.
So I think that the hit indicator should stay as well.