Yeah the Mega Game was probably the most fun Dom 3 game I have been involved in so far. The diplomacy alone was good fun.
Too bad about the unit limit, I thought it was up to turn 90+ before we stopped. There was about 11/64 nations left?
The problem was I think even if we all ganged up on LA R'lyeh it would have still taken 50 turns to defeat him with his huge amount of PD.
I would be interested in another one in May if it came up. Xietor's rules look reasonable. Perhaps a more achievable victory condition will stop the game becoming bogged down in the late game. Having huge empires result in long tiring turns of micromanagement that I do not think the game was designed for.