If Corrin's counter didn't launch nearly straight up, it wouldn't be nearly as OP as people call it out to be. Basically, all Corrin has to do is counter an aerial at around full to double jump range off the ground and boom, they've killed their opponent at around 50%. An aerial. Roy & Shulk would need to counter a smash attack to pull off such a feat.

You're goddamn right. Who wants to invest that many hours into something they don't like? Trash it so you can do something you'll enjoy.