I do. I don't engage in multiplayer often, but there can be a significant skill gap in some of the games, and that more than makes it competitive. Map control, teamwork, and aim skill are still factors in console fps, whether or not they live up to Quake's levels(and to be fair, Quake 3 makes many other PC shooters look bad in comparison).

I do agree aim assist is the limiting factor for it though. It not only lowers the skill gap, but it can be exploited which can make much of the purpose of aiming skill negligible. Aim assist should be disabled for any multiplayer mode, except from custom or private matches. Whether or not the players can aim as well as with it on is irrelevant. The fact that it would be their skill making the hits would only will increase the skill gap.

Deadzones are programmed per game. They're needed for joysticks to avoid drift, but normally they're made much bigger than needed, and inhibit effective aiming. It's exclusively a developer's fault if the deadzones are too big or a problem, especially if they don't give the player options for them.

I don't see the issue with hipfire. Some luck-based kills might happen, but the weapon spread/movement dynamic works fine for CoD and the few other titles that use it.

Aim assist is crap. I can't say it stops a game from being competitive, but it doesn't help the aiming skill portion at all.