Envelope Distort for vector shapes/groups/text
The ability to visually warp vector shapes was one of the most attractive features found in Macromedia Freehand (yes, I remember). It was the reason I began using (transitioned to) Illustrator at all. When the iPad Pro Revolution occurred, Envelope Distort in illustrator on my laptop was actually my only reason for maintaining an Adobe CC subscription at all. As workarounds for the effect were discovered, I dropped Adobe CC altogether in favor of iPad-based solutions.
There are times when Envelope Distort on the desktop version can be used in a way to bog things down or even crash the application, especially when users don’t ‘expand’ or ‘bake’ the results. So even if ED were implemented in such a way that the user is taken to a sort of temporary Isolation Mode that creates a point of no return for the operation, sort of like the way the Shapebuilder Tool currently does on the iPad version, that would be okay. Currently, Envelope Distort is the one tool that a lot of less expensive and very powerful iPad apps do not offer. Without it, there is not a lot of reason for those of us who have become very comfortable/work exclusively using our iPads to go back to Adobe.