Think about it: there's quite a few rides with on-ride photos. Let's list them all:
Monsters Inc. (assuming they keep SSL's old feature)
And, of course, wasn't Indy supposed to have one, but wasn't axed at the last minute? I know Dinosaur at AK has one.
But, alas, Disney is missing a gold mine here! Wouldn't it be great to have a on-ride photo on the Matterhorn? Big Thunder? Indy at last?! But, where would the photo go?
Matterhorn: Abominale Snowman all the way. Would love the terrified reactions given from the guests to be on display.
Big Thunder: first swerve after the first lift, I think would be good.
Indy: Boulder, duh.
Pirates: Drop #1, thank you very much.
HM: if there is any way to take a photo during the HHG mirrors, that would be so cool.
Small World: When you first enter the building and hear the song...great photos there.
Peter Pan: Off to Neverland!
Mr. Toad: Train all the way.
Over to DCA:
Mullahound Madness: Yes, I WANT an on-ride photo for this. On-ride photos on Mack Wild Mouses are always great, no matter what.
GRR: Difficult to do, but if you take it above the raft, it could come out just right.
Maliboomer: Why not?