I love the idea of Jones as the next slot receiver in the Brown/Welker/Edelman realm, I think the answer to the original question can’t be answered until after free agency and the draft.
IF the Pats lose Meyers (which I think happens), and replace him via free agency and/or the draft, then of course that limits the touches Jones will have on offense. Also, if they lose Jonathan Jones in FA, then that dictates how much Marcus Jones is needed on the defensive side. The draft also affects that too, as I consider Marcus Jones a perfect slot CB, not an outside CB.
Marcus Jones also has an injury history, so you don’t want to overwhelm him and lose his explosiveness to over playing him. Really is a catch 22
That being said, I think it’s impossible to predict how much Marcus Jones will be used on offense, until we see what the Pats do in FA, the draft, and possibly trades.