Look i already figured this out months ago when I imagined breeding 2 fireflies together.

And here is what I came up with: DON'T EVEN BOTHER DOING IT. Just avoid the scenario as best as possible, especially if you will be selling. People may want a specific snake so they buy your BEL and breed it to something, they end up getting something with all these other morphs that they didn't want. You may think that it would be a pleasant surprise but in reality it can be very aggravating.

Just don't let this happen when you are making BELs, or if you are then you need to make sure it will always be 100% hets, no other possibilities (aka super pastel mojave x lesser or something similar).