I haven't really used Windows 8.1 as I only have it on my tablet, I haven't upgraded my other Win8 machines as they work fine. My Mum's new Yoga 2 has Windows 8.1 and I was going to install classic shell and have it behave like Windows 7 however as it's a hybrid laptop I thought I'd let her try the standard install first. I went to change the file associations so that it would open pictures and video in the desktop rather than touch mode but impressed to find it was already set that way, I think it was one of the biggest mistakes they made with Windows 8. I was curious how she was shutting down the laptop as she hadn't asked and didn't think she would have found the swipe out charm bar however I hadn't realised they'd added a shutdown button to the start screen which makes sense.
Phalanx - liquid cooled i7 3930K @ 4.2Ghz, 32GB ram, Nvidia GTX 1070 8GB, 2TB SSD/28TB HDD, dual blu-ray, Dell U2711/HTC Vive