I'd love to see it opened up to in the rules. I think that would be all thats needed before you started seeing them more and more.. I mean, I can think of a couple of cool things to do right away:
Display what breakers popped over the match.
Record data from the sensors for an entire match.
Different cameras would probably allow better vision stuff
It would be very nice to have more power then the current system, and access to more tools