This is definitely something that should be in place. I was honestly surprised the first time I got pulled away from my computer for a while, came back a couple hours later to find myself still logged in (this was in Beta P3), I automatically didn't worry because I thought I would be logged out.

I would say every mmo has a character inactivity timer; Wow, Tera, GW2, Rift, Aion, the list goes on. Not only does it help with load times but we know there will be the inevitable gold seller bots popping up as they do for every new mmo, and what's to stop them from staying consistently logged in spamming from now till some random server maintenance to get rid of them.

I'm curious to know their reasoning for not having a timer in place.