What about Crystal? If it's just the aesthetic beauty you want then it might be a good fit as it's similar syntax yet statically typed which leads into more efficient compiled code.
Requiring static type annotations is likely a dealbreaker for many. I wish Matz had gone the route of python3 and allowed _optional_ inline type annotations instead of the mess that is RBS.
Crystal is great and I think it nailed statically typing in a Ruby like language, but I've always been wary of day job use of the language because it doesn't have a significant user base.
If this stabilizes and gets networking support, there are definitely projects that I'll be able to use this for, and the buy-in will be easier than proposing Crystal.