i think the exp is alright, but what about having it tick every 30 seconds, at half what it currently gives. in other words, you get the same per minute, but you get it ticking every 30 seconds... you would end up getting a little bit more exp per round on average since all those rounds when you have 2 minutes and 28 seconds left... you still got some exp at 2 and 30. pretty minor change but would help a bit i think.