Well i'd have to be informed of all the tangibles involved in this, i think i read on a bleacher report article that if he becomes the champion, he wont be able to defend his title in 3 straight ppv's? Not sure if true.
Anyways i have no problem with him winning it from punk, but the buildup would have to be pretty good, i wouldnt just like to see the title on his waist i'd like to see some substance to it all, and if the rock intends to only come back part time, and not for a full time sort of stint then i'd find it irrelevant to place the title on him.
He shouldnt get the title if creative cant produce a great thing with substance and purpose, for him to win it without much great backstory, then for him to have a crap reign, and then simply drop it at wrestlemania is a big fat no.
Considering i feel he isnt coming full time, simple answer is no.