I guess my question would be why do you struggle after 10 keybinds and is it perhaps just an issue of needing more practice or better keybinds (a lot of people new to keybinds use really bizarre binds, for instance)? As others have mentioned, every job has essentially the same number of binds. While something like black mage might be a bandaid fix, if it's possible to address the root issue, you'll probably be better off in the long run.