My question about the IL boost is: did you do this to design the fighter to multiclass? Really, that's what the feature does. So, either you dip a few levels of fighter for the feats and play a martial adept, or you play a fighter, and dip out to a MA class at key levels when your IL increases to pick up the top level maneuvers to augment your fighter class.
Although, if nothing else, I suppose it does make Martial Study and Martial Stance nicer. If you remove the three cap on MS, it could be pretty handy for a straight-classed fighter, too. Alternately, you could set the max on MS to be 3 or your fighter class level, whichever is higher.
and just to add to this a little bit. if you design a class to either be a dip class or to dip into another class you have a seriouse design flaw. ever feature of the class should be good without the need for another class to make it useful