Heh, it's been quite a while since I had a single gaming session last this long -played through all of Ys I today. Err, well, you could consider it 2 days, since it's after midnight now, but my days are messed up as it is from my job, so it's a single day for me. =P
Had a blast with it. Your patch is an excellent job - other than the few times where the game states -Fan Translation- you can't even tell. I thought everything was very well done, better than a lot of professional, commercial works.
Heh, the last boss actually wasn't that hard - after figuring out the trick. Was able to get him the second try after figuring that out... =P
Most annoying boss award goes to Vagullion, the bat creature thing. Also the one that makes getting a good time attack time rather random - sometimes it just does not want to transform.
Well, was just posting mostly to post my comments, and that I had a blast playing it.