Yeah having more range on the choke would be godlike. Right now it's about the same range as a normal throw.
Don't know if this was already mentionned:
-If overhead connects, you can link D+1 xx Ball for a nice 15% combo. The link is hard to do however, you can't just mash it.
-I takes around 3 seconds for the EX ball charge to become unblockable. One thing I like to do is go for BnB then let the opponent drop to the floor and immediately go for ex Ball charge. (especially in the corner) This creates an interesting situation. If opponent keeps blocking on wake up he'll eat the unblockable Ball. If he commits to jumping, you can early release to anti-air or delay the ball to catch the opponent as he lands. This is not very effective vs teleporters obviously.
-Ex up ball can be used as AA, anti-low attacks and anti-projectiles.
-You can end BnB 2, 1, 2 with a jump kick followed by air throw. A trick to "hit confirm" the throw is dash canceling into jump kick xx air throw. If you don't dash before jump kick then air throw might whiff depending on your spacing and timing.