Haskell prime[0][1] is an effort to consolidate some of these features into "Haskell 2020" - so there is work going on in that regard.

Semi-related: I wanted to voice that while it can be tedious to enable extensions, what they do give us is a great way to explore several solution spaces without making the whole ecosystem commit to any in particular. Some become defacto, while some are more controversial and change the actual semantics of the language. The freedom to choose is both a burden and a gift though!

[0] https://prime.haskell.org

[1] https://github.com/haskell/rfcs