Please expound on sloppily controlled fans?
For PCs, there's a lot more flexibility, control and freedom to define a fan curve that fits a lot better for your usage, then what the Mac offers. If you're referring to Apple's fan control, and needing a utilty to give you manual control, yes, I agree
As for the looks, beauty is in the eye of the beholder, I agree when that mac pro came out, it was a head turner, and its still eye catching, but and I think its big but. There are other beautifully designed and professional looking computer cases available that offer more freedom/flexibility in building out a great computer
And this was probably one of the major reasons why Apple killed off the Mac Pro. There were people willing to buy the MP, just not at the price apple was charging 700 dollars for wheels? That's just insulting to consumers.