From a viewers point of view yes he should have moved to the Light Heavyweight division because we would have some insane fights in the future. Who knows even Adesanya vs Jones could have been a possibility. But from a fighter's personal point of view, he made an excellent decision to accept the loss and step down to the original division because this division was honestly too big for him.

Talking about sponsorships, stake has partnered with Ngannou as well and he's due to fight on 22nd Jan so it would be cool what kind of promo stake offers for the fight 

I remember they did a watch party kind of stuff with him at some event and they must have decent plans when he is actually fighting!