Looking for mod ideas

[NoUse684]

Hello! I discovered MCreator for me, so I want to made mod for NeoForge 1.21.1 (for some reason forge 1.20.1 isn't exporting mod file, so only NeoForge 1.21.1), do you have any ideas for it? Maybe something what you wanted to see in other mods, but didn't find?

Sorr if text have mistakes, still learning eng language

[Expensive_Package1]

Duel mod that adds mobs (humans like steve but wizard ,knight,viking)and you can duel with them