Default Is it possible to create an Xposed module that incorporates features from iOS, LG?

Is it possible to create an Xposed module that incorporates features from iOS, LG, Samsung, HTC, etc. (and make an app like GravityBox)?

Having a Nexus and having these features would be the ultimate all around phone. I know it is probably a difficult task, but is it possible? I saw what MohammadAG did with the Scroll to Top Status Bar module and it got me thinking why is there not an app like GravityBox which allows us to add what we want but what was already created by other manufacturers?