It'll help quite a bit, I'd love to go into detail but I'm afraid you and many others would get lost in the sheer amount of numbers and equations with their amazing College Algebra requirement.
Removing AFK'ers won't solve everything but will help to alleviate it quite a bit. The key idea is to get the numbers balanced and currently there's nothing outside of natural logging out or bugs to keep one side from getting overflowed.
Adding more servers while noble is also a waste of money since there's nothing to dictate that the current volume is the new standard for this games traffic and if it isn't that's a lot of money that could have been placed elsewhere