It has been a while since I saw this discussed. Just thought I would throw this back out there. Lots of players would be more than willing to hand you their hard earned cash to gutter their Rufio and put his cards into a different hero.
All kidding aside, I once again bring it up, especially given the direction the game has taken simplifying the process of race changes and conversion of troops. The only thing preventing a person from being able to swap races seamlessly is the inability to take race specific heroes and reset them. I would think that even with a slight drop in people pulling chests to obtain the stat cards, the monetary gain would still be greater by allowing people to spend money to redistribute ability and stat points.