I think all AH needs to do with the cloud is fluff it out a little bit more.
So you can fly in and out and make it opaque but don't cover the whole arena with a sheet of cloud. As it is now the clouds gradually move across the terrain, having a few pockets of cloud would be cool but if there is too much it can get annoying.
A good example of this is on A32 ? Baltic, the base on the far east side sitting in Finland.