Now, could you call my wife and tell her that you think I should buy another plane?
Not a chance
Sure, the cub will be a step up from the trainer, not in acrobatics so much(though it might be a little more acrobatic), but it will make you better at takeoffs and landings. Nothing wrong with a cub. However, I suspect you'd be happier with a stick or 4* or simular. Just a guess though.