Would you be willing to entertain an alternative to pay to play only? I skimmed the thread to this point and it appears to have come up already (i only actually fully read the haxus posts), with someone mentioning empire formation. I personally think a twist on that wherein only paid accounts are allowed to form empires, but can make them whenever they want, might be a suitable approach.
I really like the freemium model because then there are a lot more people to play with and also its easier to convince friends to join me.
I really like the freemium model because then there are a lot more people to play with and also its easier to convince friends to join me.