The game gets boring after sometime
Actually this game wants to be like chrono trigger but can't. Chrono trigger characters are balanced for difficulty and each one has a complete lore and backstory. You feel characters and make a bond with them.
You cant use gotcha characters and expect the same quality in story and difficulty ballance.
Instead of wasting your time for creating too many gotcha characters use a few predefined and well balanced characters with customizable options and well written story.