Ok, got a few more buildings done, but have kind of hit a wall right now...
Thanks to Brian Clevenger's 8-bit theater, I got a good splash for the temple of fiends, and it was only a matter of converting one of MRTNs evil building conversions for the icons.
I also made the entire fire shrine from scratch (I seem to remember it being a volcano, so I made a volcano with a temple built into it), and like how it turned out.
The Phoenix Nest, I made from a combination of my old Blitzball court and a screenshot of the Phoenix summon in FF VII.
In addition, I have sort of replaced the graphics for one of the GREAT wonders that I still hadn't found the graphics for... I scanned the page of the official strat guide for FF CC to get the icons and splash graphics for the Veo Lu Sluice (replaces the Hoover Dam), although I'd rather find a better splash somewhere (the Icons, IMHO, are great).
I still have the following Summon SW to do:
The Great Gospel (FF I&II

)
Garden (FF VIII)
Eidolon Wall (FF IX)
Cavern of the Stolen Fayth (FF X)
Cape Terrigan Quest (FFXI)
Zodiac Stones (World of Ivalice)
In addition, I still don't have any decent graphics for the following Great and Small wonders for all civs:
Zidane's Voyage (need a pic or two of the Blue Narcissus)
The White Materia (currently uses the SDI graphics)
Wall Street... Can anyone think of anything FF related to replace it with?
I've replaced all the other SW that are not FF-related (or could be made FF related... The only ones that are the same as the epic game would be the Heroic Epic and Military Academy, although I nixed the "requires victorious army" flag and made it generate armies over time instead of allowing you to build armies)
The problem right now for me is that searching images for the remaining wonders and small wonders hasn't been turning up much, and every time I try to go to ffwikia, FireFox crashes.
In addition, while coming home today, I saw a blimp flying over and around the field in front of my house, so I'm thinking that may be a sign
...Although I would like to have this mod finished by the end of this month.
Anyhow, here's the previews: