[I'm on the Wing team] I get what you mean about adoption and maintenance overheads.

On the adoption front, we are aware it takes time for languages to get adopted. We also plan to release the Wing SDK to other languages soon, but the best DX is still provided by using Winglang itself simply because we are not constrained by what other languages support.

The language server is actually the same one for different editors, but we do need to create and maintain different editor extensions. The best supported one at the moment is VSC.