Not from what I'm seeing. The issues that I have has to do with the swipe. Unless you can specifically point out a program on that site that removes the need to swipe (to me doesn't fell natural/intuitive on using a mouse to do that motion). Or anything that else to where it's geared more to touching the using a mouse. However, the only Win 8 machine that I have is on my Cintiq tablet and I have no need to add anything to that, I'm fully satisfied with Win 8 on that device as is.
We had touchscreen work just fine with a Vista computer and if it was working back then, it will work with 7, maybe even better as Vista had it's on quirks early on. Now other things might be limited to Win 8 that's for sure, but that's the nature of the beast.
No that site will only provide the Start menu back like it was in Windows 7. I'm not sure of the issues you speak of with swipe, though I see a link to get rid of them here http://www.howtogeek.com/135507/how-can-i-disable-windows-8-swipe-gestures-on-my-laptop/ .
Anyway it is not a big issue, we use Windows 7 here and it works, I use Windows 8 with Classic Start and it works. If people prefer a pen based touch pad instead of a mouse I think a high res monitor touch screen and windows 8 would make good sense and I had read that 8 was adding 3d drivers so I prefer to keep my options open, but if one prefers to chance not requiring it they can still have a good system.
I expected someone to complain about the ECC memory and Xeons, nice to see that got through, that seems to be what makes a server and no doubt should do the same for a workstation.
Ken