WinMo 6.5 has some pretty nifty features including a marketplace. Just bought myself an awesome RPG that came out 2 days ago called Zenonia. Been hiding in the bathroom at work for short gaming breaks.
I think the main problem with WinMo phones is the bloated crap software that carriers may add in along with the phone manufacturers putting another OS on top of the WinMo OS. It slows the phone down considerably.
When hardware comes out that can handle the OS along with the crapware, then I would be happy. Never the less, I put up with it. Nothing beats a mini PC in your pocket. Apps and all that crap, I don't care much for. I can get programs that will work with the files I want. Fansub anime on the go, love it.