Allegedly viable ways.
It's quite easy to sit here and type away about all the things that could/should have been done. It's another thing when you're the one responsible for making sure it all works properly so that you don't have people with their pitch forks out criticising you for every little thing that they can apparently do better.
Let's not bullshit here, we all know if customs was a thing, sure some people would be happier, but there'd be just as much complaints, if not more, because of balance issues, lack of options for abilities, some characters with better ones etc...