This newer version already looks much better, though I'm not so sure about combining two extra effects into VSM. What you're doing with the 3 things I mentioned is basically giving him one of the following SAs:
-Vicious Attack (triple dmg on a crit)
-Overwhelming Force (ala Lord Vader) for that attack
-Flurry (ala CS Yoda, Luke Champion, etc)...which is very scary on a Vaapad piece!
Giving Mace Vicious
and Overwhelming Force seems a bit excessive, especially when he has UTF. And since this Mace is a follower (a good thing, IMHO), you'll also always be using the Chag Merc Commander (+20dmg on crits) in squads with this Mace, which means that you can move in and do 80dmg of unblockable, unbodyguardable, un-riposte/djemso-able damage, and then still get to make another 2 attacks. And if one of those is a crit (15% per attack), then you're doing another 80...yikes! If you leave VSM to just include Overwhelming Force, then Mace can run in and do 100dmg max without extra crits (UTF for 60, then 2 more attacks), and that's on par with Darth Bane, who costs 82 pts. Granted, Bane was costed at 82 back in CotF...but if he was made now I wouldn't cost him below 78 at minimum. Furthermore Bane has no real way to prevent damage, and his faction support is miserable (lacking pieces like R2, Panaka, GOWK, etc).
Furthermore, this Mace can run in for 3 attacks, and then mobile back out of LOS, which is very tactically effective.
If his name is "Lightsaber Champion," then I do think that LS Defense (rather than just Deflect) is necessary. To have a LS Champion who cannot block is like having a professional hockey player who can't skate. Just sayin'.
Maybe give him Block and Riposte but no Deflect? That would go along with his Lightsaber Champion title.
So I start to wonder if you're trying to do too much with this character, for the cost.
Like you, I really want to see a Mace that rocks the gameboard. For game balance, he can't be broken or insane, but for playability concerns he can't cost too much (or else you can't build around him...cf GMLS). Therefore, here is my humble suggestion:
Mace Windu, Lightsaber Champion
Cost: 75
StatsHP: 150
Def: 22
Att: 16
Dmg: 20
SAsUnique, Melee, Triple, GMA, Anakin-hater (or whatever you wanna call it)
Vaapad Style Mastery (crit on 18-20, Overwhelming Force on the crit)
FPsForce 2, Renewal 1, MotF2, Block, Riposte...Force Absorb?
This version does what you want him to do and it's still possible to build around him, but he isn't broken or overpowered. I really dunno...it's hard to make a high-powered beatstick that is playable but not broken.