I'm just going to focus on the following, well, because it's late and I'm sleepy. And some of your other points are good (yet I don't agree with all of them). But this one seems to be filled with misconceptions.
5 hours ago, JamieMitchell wrote
Modern Applications - The Windows store is a commercial failure and the majority of its offerings are terrible substitutes for classic third-party applications (ex. VLC Player, Chrome) or SaaS offerings (ex. Google Music or Netflix). Microsoft - accept the fact that you missed the boat on an app store, providing subscription services and building a viable mobile operating system. I STILL can't uninstall the majority of this bloatware - why Microsoft, why?
Universal Windows Platform apps (aka Windows 10 "universal apps") offer major improvements over previous iterations. They provide adaptive layout, making it much easier to have your app respond to the size of its window (like many modern websites) and to various input mechanisms. There are a host of XAML improvements, much improved focus on the desktop paradigm, improvements to interacting with system services, and so on.
Besides, there will now be legit Win32 desktop apps on the app store (via Project Centennial).
The Windows Store is no longer about putting mobile apps on the desktop. It's about putting desktop apps on the desktop, mobile apps on mobile devices, Xbox apps on the Xbox, HoloLens apps on HoloLens, IoT apps on IoT... and the developer can decide which platform(s) to target, and whether to build all platforms with the same executable binary or with separate binaries.
This store concept should look quite different from what you were used to in Windows 8. At least, once Windows 10 apps start appearing and taking over.