1. The giant tracers in PS gave your position away admirably. There was no such thing as a sneaky kill. Except, possibly, for flak vs air. Cloakers can have their position given away easily since they just killed you.. You knew where they were then.
2. Kill cams come in two varieties. Some show the killer, some show you being killed.
3. Cashfoyogash: PS was never really about that sort of tactical gameplay. I'd say even the battlefield games were closer to that ideal than PS was. Its a run around full speed guns blazing game a lot of the time.
I vote no though, just because they are annoying.