1) One thing good about this is its "Nostalgia" feel. You used the sprites from every generation. I once again got a look at the "Upside-down" Koffing and the Golbat with its tongue sticking out. I also realized how unappealing (for a lack of a better term) Chansey looked back then in Gen I.
2) Although I didn't like how each region was positioned, I understand that you (and/or the graphic designers) were thinking of screen space.
3) I was browsing through random pages when I came upon the Lost Cave and Resort Gorgeous pages.
a) What happened to the trainers and items that were supposed to be found inside the Lost Cave? Lady Selphy was one of the trainers whom you get to batlte.
b) Before I moved on to Emerald, I used to travel around the Sevii Islands just to battle the trainers there. One of my usual destinations was Resort Gorgeous.
I noticed that in your page, you said that Lady Gillian had three Mareeps. It may have been a long time since I've played Fire Red, but I somehow recall that Gillian had a Flaaffy. Bulbapedia's article on Resort Gorgeous (
http://bulbapedia.bulbagarden.net/wiki/Resort_Gorgeous) also says that one of Gillian's Pokemon was a Flaaffy. Of course, this may have to be confirmed by someone who has a copy of FR/LG at this point in time (My friend's currently borrowing my Fire Red, so I can't confirm it myself).
c) I am pretty sure that there was supposed to be a swimmer somewhere along the path leading to the entrance of the Lost Cave. Again, this may need some confirmation, as the article that I cited only mentioned the trainers who give huge pay-outs.