I would hope to see Wonder5 Master mod for android (I have non root currently), only if possible.
This is a new game that just got launched so I know a mod won't be out that quick.
What I would like to see, if possible, are the following (whichever can work and not have a high chance of being detected) :
1) Unlimited stamina or dungeons uses lesser stamina
2) Higher chance for loot (like x2 etc)
3) High Hp or def or allies/your units don't take any damage
4) Possibly earning more gold and exp
5) Upgrading skills does not cost gold
6) Maybe a x2 speed