There are 2 things in the game that really don't give a lot of incentive to me when I play, which are challenges and traders. Challenges give 2 skill pts upon completion and can be repeated indefinitely, IF I can manage to find them, which in and of itself is a very low chance, and then there are the traders. In early game, one of my top priorities is farming wood and crops, so as soon as I can make beer and first aid bandages, I no longer have need for a trader. So:
1. I think the challenges should be given by traders so the players no longer have to rely on RNG/Farming
OR
2. Players can craft mailboxes and challenges can spawn inside them.
In either case, the player would have to wait 24hrs to accept another challenge from either the trader or the mailbox, which would prevent spamming challenges. In my opinion this would give players more incentive to interact with traders and would enable players to eventually earn enough skill points to master all skills like in previous alphas without having to rely solely on RNG.