That would be quite interesting to see.
Still, the whole reason for Pike to return to Talos 4 is to regain something of a normal existence even if it is an illusion. His being totally incapacitated allows for Spock to enact his plan. If Pike were able to speak and make his objections known that then changes so much of the story as we know it. Unless, perhaps, you have Pike somehow enlisting Spock's help to return to Talos 4.
Hmm...
Part of whats weird with seeing Pike in his chair today is due to the advances made over the past fifty years. Today someone could be connected to a computer to allow them to speak via a computer display. If Pike can move his chair, even in a limited manner, then he should be able to communicate in a manner somewhat similar to Stephen Hawking with today's technology.