There isn't much an iPad cant do these days, hell you can even do 4K video editing on the Pro's. People seem to just overlook the fact that you do things differently than you would on a PC. Yes it is restrictive but it improves every month as desktop apps port across.
Like access a VDI session with a trackpad? Apple makes the best trackpads and yet somehow they still don't support them in iOS. The Surface's cover trackpads are crap by comparison but at least you can actually use them with the OS.