I think that RPGs are not the right type of games to cheat at... you'll end up with so much money that you can buy anything you ever wanted... now doesn't that sound horrible? Nah, but honestly I do think it will make the game less challenging.
I am still playing bionic commando. beating a level every other night or so.. maybe they should have called it bionic headache instead!
Tried the galaga legions demo and didn't like it as much as I thought I would.. going to give it another try later.