There is already a way to host pictures already on FT, it's just sufficiently obscure that the only one who remembers how to do it in our forum is Kage -- even I have forgotten again. So maybe just making it easier to use would make a big difference.
I have also wondered if a smarter search function would eliminate a lot of the need for separate reviews since the totality of views could be found from the existing threads.
For example, if I search for "Four Seasons San Francisco," it should also find alternate spellings for both the hotel chain (FS, 4S) and the city (SF, San Fran,...). I was going to try my hand at producing a tool like this but have had to put it on the back burner because other parts of my life have gotten busier. Also, if I did my implementation using the FT search functions multiple times, it could well bog down the site.
Anyhow, that's some thoughts from me.