You really think that is a compelling argument? You seriously believe what you are saying?
1. Game controllers will work great with it. I even have a bluetooth contoller hooked up to my android tablet and it works beautifully.
2. Many of the Windows 8 tablets are convertibles and come with a keyboard dock for office type work and a pressure sensitive stylus for creative endeavors.
3. For applications like photoshop, Maya, Zbrush, etc. a stylus will work beautifully. Try out a Wacom tablet for a bit. It's a great way to work.
4. I'm actually less interested in Surface than I am in the Asus Transformer Book. It will have discrete graphics, a full qwerty keyboard dock, a Wacom pressure sensitive stylus, 16x9 ratio, and various size offerings between 11 and 14 inches. I'm an artist and a 14 inch screen I can draw directly on with pressure sensitivity is a huge plus.
I'll even give you some legitimate arguments for the future you can use against this, however I feel the advantages far outweigh the limited and resolvable issues.
1. Most x86 Slates are top heavy when connected to the keyboard dock. Even many ARM-based Android convertibles are.
2. Battery life will be poor when pushing the system with games and DCC apps.
3. Heat could become a problem when cramming so much high powered stuff in such a little space. However, that remains to be seen.
4. 2 or 4gb of memory is pretty slim for a Windows tablet. Windows 8 is very efficient with memory usage but the problem lies in memory hungry programs like the ones listed above. An 8 gb model really is neccessary for a professional device.