If you want to use something pre-existing, I'm guessing ZomB would be your best bet based on what I've been hearing. However, here's no better advice than to just try them all
Sadly, I don't have much to suggest in the way of the pre-built dashboards (except that I noticed the same problems you had with CARD), as I'm new this year and just jumped right in to making my own dashboard. I'd suggest this if your programmers think they're capable of it and need something to do (I'm not sure how much experience other FIRST programmers have), as there's always the problem of many programmers, one robot.