My 2 cents, before adding more skills they should rework/finish the ones that are already in the game, trapping, fishing, farming, metalworking, etc, most of them feel a bit underwhelming after a while.
Mods like "le gourmet evolution plus" by Snake kinda adds so much content in this skills without breaking the gameplay that i would love the game to have more of this instead of new skills even if new skills would be cool.