I have a male bee that's possible het for albino, and am planning to try to prove it out next year, which has a very long shot of producing an albino bumble bee.
That's not true. Cinnamons, lessers, mojaves, butters, black pastels and probably a few others drastically change the spider pattern, so adding any of these to an albino spider will change the color and the pattern. Some of them will look significantly different than an albino spider. Even the subtle albino bee combos are worth the work for the power house breeders that can be produced.