Re: Older Versions: 4th the BBB
I have a Champions game and while the combat does take a very long time, it's certainly doable.
If you have everyone try to agree up front to try to post or check in at least once a day, it might help.
Still, I see what you're trying to do, and I admire your creativity.
The subturns, to me, doesn't seem to really speed things up so much as muddy the waters by having people go multiple times, though I might be wrong about that in practice.
One thing you could do, though this might limit people's character choices, would be to have everyone have Speed 4, so that everyone goes at the same time, with henchmen or agents going with Speed 2.
I like the idea of everyone posting in a separate thread for their actions, so that the GM can post what happens in the "Combat" thread. It would streamline things, certainly.