My biggest hope for Mac is that Doc pulls a PT with his character. Not so that it detracts from Mac's own character, but because Doc cheering on Mac is an important element of the games, and to not have that in this situation where Mac arguably needs it most, i.e. going head-to-head against Ridley, Bowser, GDorf, just doesn't make sense.
Maybe that could factor into one of Mac's moves or something, but really I just want Doc there to be as true to the series as possible.
I know this has been brought up before (I've brought it up before) but Mac's been on my mind recently so yeah. I dunno, what do YOU guys think is your ideal situation with Doc?