If you have to do that, can you get it to do a quick check as to whether any unrevealed tiles are in the immediate viewing area? The vast majority of viewport shifts once the game gets going wouldn't need the blank transition, and having all those times doubled would suck a lot.
Also, my viewport seems to want to carry my great wall around with it. The wall seems to be in the right spot on reloading, but when the viewport switches, you can sometimes see part of the wall in territory nowhere near me (that should happen during this turn) and when it switches back to my general area, if it's not to the very same unit that went first on the load, the wall will be misaligned from my border.
View attachment 326448
SVN 3103 or 23? (the volcano fix-this version has been so stable I'm hesitant to update) 48x30,2 VP. As I said you probably won't see anything on loading, I just thought it would be helpful to have a save with the wall in existence and a VP switch coming up.