From what I have seen stat decay will keep players from being truly good at doing everything. You either need to keep your int/dex/whatever high for your crafting or keep Str/Fort/Agility high for combat. Sure you can do it all, but you are going to be far less effective in the one that you don't have your stats aligned for. Throw on top of that skill decay which i have yet to see, but I am sure is there, and you will see people specialize. However, I like it that people can still do a everything if they are ok with being bad at it *ie solo/selfsuficiant players* It is the freedom needed in this game.