It will bring many high level features like type safety, immutability, runtime error free code and code that is easy to refactor, once the Haskell learning curve is climbed. I like Haskell for its brevity and pseudo code like syntax which really runs like Python with all the necessary safety.
Given Haskell share in the overall eco-system of languages, I don’t expect it to have any significant impact. But this little steps are necessary to move forward Haskell.
I think the biggest stumbling block Haskell need to overcome is to have good documentation like Python. I believe if instead of just features, language research Haskell community needs to put extraordinary efforts in documentation. In spite of Haskell being an old language more than 50% of packages on hackage do not have proper documentation and unless that do not go up to 90% or more Haskell won’t be able to be used effectively by programmers to solve computing problems. We all stands on giants of shoulders and for that to happen need documentation. I believe people underestimated the power of good documentation. It should be twice or thrice more efforts than the language feature development itself.