SWEET! First thing I thought of after seeing Rex was to put him with Yobuck for the 16 square Assault with Galloping Attack thrown in there, lol. You just beat me to it on actually creating the squad.
For clarification sake, since I've never played the Gungan on Kaadu, lol. Would galloping attack work like Strafe does, where you can get a Strafe attack on an enemy, and then still make a regular attack against them? GA has the same odd wording about only making one attack or something like that.
Would give you the possibility of doing 80 damage to some enemies, as long as you were willing to eat the AoO. With Yobuck's 160 HP, that would probably be worth it in some situations.
Disruptive certainly will hurt it, but outside of Han GH, the Disruptive pieces are either easily avoided, or easily killed, and so you don't seem them THAT much at the 150 point level. Han GH could be tougher, but I think you'll see less of him at 150 points as well with the init change (anybody seen the rules yet, is this in there?). The Han/Mara NR squads were popular with the MTB anyways, so this would still likely be a good counter to those, other than the fact that Yobuck needs 3 rounds to kill either Han or Mara if Disruptive is in play, so it would definitely have to be a kill fodder and then sit back and wait game against that type of squad.