The point isn't whether there will be an eighth level or not, or whether it will resemble Heroes of Might and Magic or not. From my point of view, let it be similar to hockey; the main thing is that it should be interesting. If Heroes of Might and Magic were in 3D, I would even quit my job just to play it.
In my opinion, the eighth level doesn't really add any variety and doesn't make the game more interesting at all. This is just my personal opinion, and I'm not imposing it on anyone.