I steal with all sorts of nonsense if the blinds are tight. Especially if I know they are playing lots of tables. Ideally, I want people who will not call but rather fold/re-raise (and the latter infrequently). Whatever the marginal direct EV of this play is, I think it's important for image (i.e, I do not want to be percieved as tight preflop).

I will not really defend my blind without something playable, being OOP against an aggressive player sucks. Re-raising light is good, but I like to have a hand the first time, until you know if they are just raising lite and will meekly fold, or they are crazy aggro and want to play re-raised pots with garbage.