I'll talk about the free update.
"Hero colosseum"
-New miniatures (here all the 192 miniatures
https://www.youtube.com/watch?v=hEk6MPfyoZA )
-new x5 system to get, every 600P, an UR
-new system that give you more the XP when you toss a miniature (to a max of 20 at time).
-you can raise the level of your miniatures to lv 99.
They improved a lot this mode and now it's really better!
I hope that in X3 they will add new what-ifs, tranformation and characters (like heroes).
"Mentor new system"
They really need to improve this one with new updates. It's boring that turles, raditz can't tuns ssj (or gohan/vegeta/broly in ssj3), slug and piccolo can't become giant and cooler can't become gold.
We need to personalize costumes, skill (trasformation ecc) and point (healt, attack, stamina ecc) like a normal avatar.