Honestly I think Kuiil has a good chance of happening. In if we take the Bluurg out of the equation, he's effectively a head, hand, and foot sculpt from a tooling standpoint, and they get to reuse the Jawa/Yoda/Ewok parts to capitalize on those tooling investments.
What they need to do is put him in a two pack with the upgraded pram he builds, another Child, and some new Child expressions. Maybe put the frog into the set too. There's your set in a nutshell imo. And it uses a good amount of existing manufacturing costs so it's an appealing item in and of itself.