I think in these discussions there are actually three discussions going on simultaneously that get mixed up with each other—there’s 1) what we as individuals wish Apple would do with the iPad; 2) what we believe Apple should do (as obligation to us and/or for their own benefit), and 3) what we conjecture Apple actually will do. Sometimes it’s hard to discern which discussion people are partaking in. Personally, I usually stick to #3 and sometimes #1, but almost never #2 because I don’t believe a company is obligated to do anything except obey the law and not trick their customers, and I assume Apple has a much better vantage point than I do as to what is most beneficial for them.
Regarding separating the iPad Pro line with different major software features, even if only optional, though I would welcome it myself, I’m pretty doubtful Apple would do that. Because in the iPad line and all of Apple’s product lines, “Pro” just means better hardware, but pretty much same software (other than subtle differences based on things like different screen size/resolution). To add major software features to only the Pro hardware would be a new precedent for Apple, as far as I know. And there’s nothing I’ve seen that leads me to believe Apple has any plans to do that.