Alus, I'm not sure if you see it or not yet, but a large reason for Gaia utilizing a ring-based combat system is to greatly decrease the workload on the already small development team (come on, it's run by donations so you can't expect a team the size of what Blizzard or EA could produce... it is, more than likely, only a handful of people working all day on this) You have to take into account that for there to be weapons, they must draw the animation for swinging the weapon first on a blank avatar(read, nude) Then they must modify every single existing piece of clothing for each of those frames so it 'flows' right. They then have to check for layering problems, fix those problems, then go back and double check the images to make sure something didn't slip through the cracks... with the number of items gaia has (and with almost every monthly collectible item having atleast 5 different forms) this could easily account for months, if not a full-on year of extra work. And lets not forget that they'd have to scrap the ring system to incorporate the weapon system, otherwise they'd have a nightmare on their hands for balancing...
--Syaoran