I'm on the server right now, and the ow idea is very unique for Graal and nicely done. When in full-screen the gui is transparent but when in regular windowed mode it is 'dotty'. It's not the best thing ever, could use some more detail on the dragon on the main gui, but it gets the job done. The inventory is easy to use.
When I was choosing my stats, you need to make the gui hide though, because the time gui was in the way of the stats and didn't know what was the first item on all the lists. Also, I didn't know what to do for name selection, and now my character's name is Aa.
The server has potential, and I'm interested to see how the battle system comes out. I think a system similar to that of Chrono Trigger would be best for Graal (and one of my favorites overall in rpgs). One last thing, don't do actual battles on the ow, make it warp you to a different level and do the battle, then get warped back after, because your character is way too small to see for something like that.