From my experience regs react in 3 ways to SB limps:

- isoR 18-24% (don't care)
- isoR 28-32% K8o+ A8o+ etc. (good top pairs, expects limp/folds)
- isoR >40%. These are the widest villains who always put you on weak hand. Any good high card goes, sometimes spew off post-flop.

Bots raise much wider but that's leave that out.

I wrote post about off-suited aces and how I wasn't sure how tight I should call vs 3x raise. If I can't call A7o BB vs BTN 3x, then why would I call it SBvsBB?
This might mean that we are overfolding, but if we only get raised 30% of the time, does it really matter? I think we should go with hand playability first.

Same would apply for a lot of the weaker suited connectors. They are not doing well range vs range.

Third hand range is suited aces, kings and queens. How well are hands like Q3s K4s A2s doing range vs range and playability wise?

I think if we end up limp/calling hands like A3o 96s Q2s we would be easy to play against, and we may overcall against relatively tight range.
Against 3x raise we are getting 33% pot odds. How do we take this into account in our decision?
If we call wide, should we have a donking range on low boards?

What I'm trying to say is, is it correct to have tight limp/call range in SB?
Yes, it may be exploitable, but it depends on how often we would be exploited against. We can always widen up if BB goes crazy, but many don't.

I don't even expect most regs to have limp/fold stat for SB in their main hud.

In standard blind structure I play raise or fold in the small blind unless I’m <20 bb deep.

If ur limping sb then weak ax like a6o become close to limp folds as they play too poorly oop as a call, but it obviously is a fxn of the range the bb is isoing with.

On my site I raise 100% of hands vs sb limp fwiw

It's extremely likely that in a negligible rake environment the gto sb strat is mixed heavily with limping and raising in order to maximize the number of hands the sb can profitably play at equilibrium.

The issue you run into here is that everyone reacts to limps differently. Not only in isoing frequency but also in range construction. Some raise polar, some raise linear and then it becomes very difficult to say what exactly you should do with marginal hands. If you're not sure probably best to just air on the side of folding, since all those spots would be very marginal ev.

It's also worth thinking about the rake structure, the more rake the less limping makes sense. If you mass table it's also worth thinking about the extra complexity you add to your game for what is most likely negligible ev. I think unless there are antes or you are playing in a near rakeless environment it's probably best to just stick to raise only strat.