I also think would be kind of cool (since money wasn't a problem for anyone this time around), is to have daily On-line donations.
The money can go up and down as your candidate rises and YEEEEEHHHHHHHAAAAAWWWWLLLs all the way down.
And a way you can make CPs more valuable, you have to option like Polling, where you commit a CP as long as you want to solicit On-line donations.
The CP could be considered the Web Master of shorts.
Also I think might be cool is if at the end of the primary you get the option to opt out of public financing for the general Election.
So you can either keep whatever you got in the bank and whatever you can raise from going forward...
or you can get 76 or so million.
But alas, much like everyone here, this could be an update.
It's hard (and stupid) to give ideas about an update you haven't played with yet...