I agree with you, the only reason I dont own an iPad at this moment is because I cant use a Mouse. This cant be fully considered as a computer and less than a Pro device if I dont have a mouse where i can use it as Pro entire day. With iOS 11 this got closer, but still no mouse. Just imagine, what you can do with a mouse inside of a Pro apps like Office, iMovie, Photoshop etc... will be awesome. Personally i use a lot citrix to connect to my computer workstations. They invented a Citrix mouse that can work inside this app, thats huge. Other Apps can do the same. Its called Citrix x1 mouse