They maintain a balance between both. There's lots of content for hard core players that exists in this game. Grinding AP isn't hard core. Given enough time anyone can grind these weapons out. It doesn't take any skill to do so. I slowed down at 39 because I was bored as hell.
Your reward is you have a weapon that's more powerful than other players right now. You'll also be ahead of other players who haven't grinded out AP come 7.2 when your investment of 35+ AP is converted to the new currency.