I think defending BBs wide is a major leak, specially on multiway pots, where you tend
to play an inflated pot out of position (because of limpers/callers) against multiple opponents with weak holdings... And even if you hit big your hand, you'll rarely realise your
equity. I just don't see defending wide being profitable on the long run. Meaning: you're very rarely going to be able to bet one pair type of hands (most likely improvement any hand can make) for value nor generate enough folds to
bluff profitably often... So... I think it's more profitable to defend a range of just suited connectors, suited Axs, pocket pairs... Hands with implied
odds. Or 3-bet bluff with blockers like an A or a K, to thin the field, bluff repping a monster or win the pot right away.
Yes, that means folding that offsuit A7 or offsuit KT, and defending that 97s, 75s and 33 to play for strong draws and sets.