General comments:
It would be really cool to get this thing detailed and organized, although plenty of detailed FAQs existed for it in pure text form.
Your list of sidequests seems to be a bit sketchy, I don't see the trip to the lost city underground anywhere there and one value is repeated.
Other useful lists to include might be the charts of what allows you to win what at the colleseum, and a list of the formulas and odds for the game which people have decoded.
I'd be willing to help out and do what I could to contribute, I just filled in a few things on strategy and choosing your party which applies to a few sections of the game. Let me know if anyone would like to coordinate this or help out. User:BigCow
As another side note, most guides recommend performing Sabin's sidequest last, as it allows you to keep Shadow in your party for the longest amount of time I believe, so I may reorder those as well.