Wordpress still didn't have an official style guide or components when I was developing in it which always irked me. Every plugin looked different and most time

Wordpress still didn't have an official style guide or components when I was developing in it which always irked me. Every plugin looked different and most times you would get jQuery conflicts if 2 plugins needed different versions. Also people not using namespaces and just throwing functions within the global namespace was a nightmare to debug. Don't get me wrong, WordPress has always been great at getting something up quick, but if you're going to be creating an app where you need a separate framework, I don't see why you would pickaxe into WordPress itself. Just create a separate app in your favorite framework of choice and use their API to interface with it. Their API is actually really good and easy to work with.