if you only reduce him by size while keeping his strength, skills and quickness, he would probably achieve even more successes imho. a 6'6 or 6'9 dirk would settle at SG/SF where he can make the most out of his shooting skills, and he wouldn't have to waste much energy to rebound or attack the low-post like a legit PF does. dirk would be a white version of durant with better defense, strength and mindset.