it's a great idea, and i'd do it in a heartbeat. problem is, if you bring the alcohol content up too high, they don't freeze very well. and if you don't have enough sugar in there, they don't stay creamy while frozen. i can maybe squeeze a couple more percentage points into the ABV before i need a deep freeze to get the consistency right, but then they turn to mush before a person gets them half eaten.
if you want a fruity everclear beverage, jungle juice is still the way to go.