Well I recently got a Windows 8.1 Asus T100 tabtop and aside from the keyboard dock suddenly dying I really like it... along with everyone else I've shown it to. They all say, "oohhh Windows tablet" and refer to the commercials or the Microsoft Surface. Long story short, whenever they ask about a certain app I get scared because a) the official isn't in the store b) the third party version sucks c) probably won't come to Windows.
Some of the prime examples are Instagram, Vine, Snapchat (big one in my school), Candy Crush Saga, Big Buck Hunter 2014, most AAA mobile games, and YouTube. Even though Windows Phone has either the officials or an excellent alternative to these none of those wonderful apps are there for me when I need them most. I love Windows 8 with the whole design language and compatibility with desktop apps (I'm surprised I only downloaded Office 2013 and Google Cloud Printer), but (unless Android virtual machine works) things like Bluestacks or Windroy can't work with my camera and are laggy complicate the problem further. My only Android a resistive screen Skytex Gingerbread tablet I've put through a lot (I typed a few papers in Google Docs on her) and even with a calibration app the screen is impossible to type on to the point I can't login to Snapchat.
If Microsoft had Windows at least allowed Windows Phone apps to run on it or preferrably like it is rumored to unite the app stores that would be dandy. Then I could at least play Angry Birds Go! or other Windows Phone exclusives. Even with the announcement of Viber today (still a ripoff IMO because you have to have a smartphone to use it) the app situation looks bleak and the linkage of the Stores is really a stopgap solution. I mean no Soundcloud app? Still I'm glad they have a lot of the basics covered (still no fps games in store).