Just finished the game, a couple questions and a couple thoughts on it (2.3.3). Can you actually get into the sewer in 1999? because I really tried and couldn't figure it out. I would recommend making it more clear how and where to get into stuff, because most of my time in 1999 was spent just running around (about 3 hours worth) trying to find where to go. Also, I would recommend making it much more clear if something is assessable or not. At the 99 millennial fair it felt pretty obvious that the parts that said under construction I couldn't go into. Where as with that damn sewer, I really felt like I could get into there.
I played this on nes difficulty which was a great experience through about death peak. I felt everything was appropriately hard, but after that the side content really became fairly easy. It was a little disappointing how hard i stomped zeal and lavos. I was about level 78 with my characters with almost no grinding. I would recommend decreasing how quickly you level after about level 40 or 45. and giving some extra health to end game bosses. If I had done lavos at level 65 or so I think it would have been a much deeper fight. Also, I would set the center cores health to about 15-20000. that way you can't burn it down before it gets to any big attacks. Maybe the same with some other late game bosses (especially zeal), but I think if you were about 10 levels lower on average they would have been reasonably harder. (ps, the pink nu is probably appropriately hard though, took me quite a few times to get all my gear right to beat him).
The hack is fantastic. I really had a great time playing through. I am going to do a couple new game+ I think. Is is possible to switch from 2.3.3 to 2.3.7 when i load into new game plus or would there be anything to worry about with that?