Not to be rude, but how many hours have you put into the game? Because your regdate and name suggest that you started with the April 25th patch. Now, I have seen some really good ideas come from people who are posting for the first time.
However, you lose credibility by claiming that that increasing the effective damage of single-handed weapons by 50% would not be overpowered and simple to do. Getting 1 extra AP in this game is really, really significant. It's not even just about weapon damage (although it'd throw out the balance between 1H and 2H weapons as well).
Everything becomes cheaper when you no longer have to choose between attacking normally, or using a skill or item. Or when you no longer have to choose between moving to a new target and staying put (because you haven't got enough AP to both move and attack). Lowering the AP cost means suddenly that skills are a LOT cheaper because you're now spending less AP on regular attacks. You can move farther and attack enemies you couldn't before. Scrolls, potions, consumables - everything. It would be an incredibly massive balance change, and I don't think you've played the game long enough to realize that.
I'm not saying that doing something about weapon specializations to make them more than something you get after your main skill is a bad idea - it isn't. But lowering AP costs for all single-handed normal attacks IS a bad idea.
