Here are two very common situation at micro and small stakes (6max, 100bbs).

Situation 1: Hero is SB, 1 players limps, action is up to hero.
Situation 2: Hero is BB, CO limps, SB limps, action is op to hero.

Assuming the limper(s) are the usual 30/10 or weaker ones, and not complete callingstations postflop.

My range for raising in these positions is spot on 77+, AJs+, AQo+, KQo+.
All smaller pairs I'm limping/checking, some broadways as well, SC's-1gappers etc depends on the players, my mood and image, but the smaller ones I'm folding in situation 1 quite often lately.

Reasons for a relatively tight range are obvious I assume.

Nevertheless, is there value in opening up my raising range in these spots a bit?
If yes, what hands are prefered and why those?

(fwiw, hero is playing 20/17 and stealing blinds 35% or more.)