[Haskell-cafe] User-Controlled Defaulting Proposals?

Hey all, I wish Haskell gave typeclass authors more control over defaulting. I see there are a number of proposals here: https://ghc.haskell.org/trac/haskell-prime/wiki/Defaulting Are any of these being actively pursued? If not, why not, and if so, what proposals will potentially make it into Haskell eventually? Just curious, Andrew