I'm not so sure about full BAB on monks. They already get two extra attacks if they get to 12th level. Instead, I think maybe adding Wis to their attack and giving a few bonus feats sprinkled through the later levels would help.
Now that's an interesting idea. The monk's AB would increase depending on what items he used to increase his wisdom stat. He wouldn't be subjected to making weird or unsual magical items in order to avoid being shafted by the periapt of wisdom only increasing his AC and stunning fist DC a few notches. He may even get double-served he were to still create a strange item like some gloves of might fists or something. That would at least give the monk, using the appropriate amount of gold, to at least have decent AB while still being unable to tread on the fighter's shoes necessarily (considering the fighter can still just invest in magic items to increase his already high AB).
And I also agree that feats is what the monk could use. But what kind of feats are we talking about. The fighter already suffers, somewhat, from the diminishing returns effect in terms of feats. A monk has access to the exact same feats, which has always confused me. They put in the monk, claim it's a mystical class, but then have it take feats that better serve full BAB characters. If we don't want to give the monk full BAB, at least give it access to feats early on that increase its own unique strengths.
They give monks limited stuns per day? Why not use those collection of stuns for a variety of different monk techniques that would allow them to do what they seemed to be designed to do in the first place - create weird effects in combat.
Stunning Fist was unique enough, but it doesn't go any further than that. 3rd Party books try to expand on it. Oriental Adventures did a good job with the variant stunning fist feats. But that's not core rules, of course.
I think the monk serves fine with its low HP and relatively low AC. Even the mid BAB is cool. It's just that when a monk hits, it's rather ineffectual, and at times just as purposeful as a fighter, which isn't much good because the fighter, barbarian, and paladin all do it better, and more often.
I'd always suggest having monks use their stunning fist attempts as a kind of "token" or action point pool, which they would then use to perform a variety of their monk feats, whether that be different kinds of stuns, or defensive maneuvers. Kind of make them like a pseudo-spellcaster with spells per day, rather than the awkward mishmash it is now. I still love monks to death though, regardless.