LCBelgarath

I know that information can be transferred via usb, but I don't know if the game has any protection against that as it would be very exploitable.

I have a level 25 High elf as well. I've found that dumping runes in GI helps, but that using items for Skin and other abilities to help regen times significantly. Once I got bargaining I found items increasing Combat Arts by 3 like crazy, I'd suggest getting bargaining and buying up items with bonuses since they have less regen penalty. Easing off of runes and using items instead might help you as much as it did me:)