I personally would love to see Kasich-Rubio in the general. They're both reasonable yet conservative, a combination of qualities difficult to find in the modern GOP (thanks in part to the influence of conservative media on the Party).
And, as I've explained elsewhere, I'd like to think I care about America's return to a rational politics than about my preferred party's success.
It would definitely be a ticket to reckon with to be sure. I definitely heavily disagree with both of them on certain issues but they are entirely reasonable in comparison to the rest of the Republican candidates (not that that necessarily says much). I'm just worried that the GOP has gone so far off the grid that they wouldn't actually consider either Rubio or Kasich as 'conservative' enough.