Thats hard to say. A lesser Mojave Butter should be a BEL, and some of its offspring should be too. A Black Pastel Cinny Sable should be a solid black snake, and the offspring it produces should be solid black as well. Its basically the same question as "What would a Super Lesser Super Black Pastel look like?"
A very interesting question it is, but unfortunately no answer for it yet, only theories..
7 adult Royals (2.5), 1.0 COS Pastel, 1.0 Enchi, 1.1 Lesser platty Royal python, 1.1 Black pastel Royal python, 0.1 Blue eyed leucistic ( Super lesser), 0.1 Piebald Royal python, 1.0 Sinaloan milk snake 1.0 crested gecko and 1 bad case of ETS. no wife, no surprise.