The expose thing needs to go away and he needs a new mechanic that works with other Jedi and/or counters Sith.
With it in the game I'd like to see him get a lesser version of Sion - basically he builds up Vapaad stacks every time he gets hit - 1 normally, 2 from darkside, 3 from Sith. They give him defensive bonuses as they stack - as his defense is one of the hallmars highlighted in
starwars.wikia.com/wiki/Mace_Windu - and then when he uses smite he can unleash them all on a target for offense.
I don't think anyone needs Macey to be the next meta - but it's a wet kitten to gear him for his ship only to have a totally useless toon you wouldn't even want to put on TW.... I'd like his defense stacking to make him a REAL tank - you could option playing him to not let those stacks go on a Raid to add to his survivability, IDK.
Throw in a higher base tenacity to reflect who he is - wouldn't mind seeing a Jedi Council tag - and these best of the best all get Imperial Trooper like bonuses when they're together.