chess varients

I think that you should be able to play stuff like fog of war or bughouse against the bots. I mean, you could play a game with out losing rating, or just practice for fun. Who here agrees with me?
The variants under Play > Variants are based on different code than the other parts of the site. Also, the regular bots don't know the rules of the variants, so the site would need to modify the engines to support any variants, which isn't trivial, since most variants would have different evaluation functions.