I too would like to see Rubio out, but don't think it would play out as you wish.
The only way for Cruz to win is by following Romney's process manipulation he outlined today. Under that scenario Cruz with Romney's help could get the nomination. Unfortunately Hillary would win the general because Trump supporters will simply stay home having been disenfranchised by the republican elites.
I pray that's not true. Everyone should vote even if it's for a third party. Seriously.