Shavkat and his team are calling for an interim belt at the UFC 310 and suggesting Kamaru as a potential opponent.
I don't see how Shavkat fighting for the interim belt would be unfair to Belal, who opposes the idea. After all, it's Belal who is unable to fight. If anything, it would be unfair to make Shavkat wait for his next payday for ~2 more months if not more. And it's not like Belal will be stripped of his belt or anything.
I like the idea of Shavkat fighting Usman, provided Usman agrees and will be ready by then. Some say Kamaru is not deserving because he lost his last 3 fights, but he only lost to Edwards, once by KO and the second time by decision (in an even fight), and to Chimaev, who now is one of the most feared fighters in the UFC. In that last fight, he fought on very short notice and moved up to a higher weight class and still did surprisingly well, so it'd be fair to give him a chance.