Alright. So MoDs - the ones with multiple mutations. They are insanely expensive, and currently do not have the same failsafe marking applicators do, meaning you could get bisected piebald three times in a row, if you were so unlucky.

My suggestion(s):

[Preferable] Allow a user to select one of the possibilities they do not want from the MoD. It keeps the majority of the randomness, while manually adding the failsafe and giving some vague control over what we get from an expensive item that costs actual, real money. It sucks spending actual money on something and getting the thing you absolutely hate - doesn't make people want to spend again.

-OR-

Add the failsafe marking applicators get, to ensure you don't get the same pie/patches twice in a row.

Personally, due to the price of the applicators, it would make more sense to have the added feature of "do not want x", since marking applicators can be gained for free, while piebald/patches MoDs are expected to have cash handed over for them.

Retains randomness, prevents disappointment. I believe it's a fairly decent middle ground.