When I run around a lot and run into head on confrontations, dexterity is basically necessary. I have it on every class I think except my sniper one, because I don't try to go out and quick scope or anything all the time lol Even climbing fast is useful. Since so often you're dying by people sprinting at you and suddenly pulling up their gun, you need it to help out unless you're mostly posted up somewhere already
But almost every perk in that tier is worth a slot, depending on the situation of course. Extreme conditioning for things like CTF, even Search. Tactical Mask and Engineer are good for everything. Awareness helps in Search now as well (at least in league play lol) Only one I don't really use is Dead Silence, since most don't use Awareness. I might use it sometimes though
