Probably not. The reason is that FfH does a lot of things fater just generating the terrain. Lairs are placed, unique features, elohim have unique feature plots revealed, etc etc. Regenerate just recreates the terrain, so it doesnt work for us. It opens up a lot of issues, or even worse, it causes a player to play through half a game only to find otu that their arent any of the FfH stuff in the game he was hoping to find.
Because of that we had to remove the Civ4 regenerate feature. Not to say its impossible to code up our own regenerate function, but its not as easy as flipping a switch and there are higher priority things on the list.