At this point one can still hope Gundou will smite Carol's suggestion and suggesting Tomo and Jun instead.
And yes, i have to agree Tomo as Prince is cliche as heck. If i may say, i prefer Tomo as wicked stepmother if she can't be a princess because it will be a lot more funny that way.
On other hand.
It would be funny to see people expect Tomo to act princely but instead looked cute and adorb in stage.