And yet you should of planned for people wanting Co-Op in VOTV. Honestly, you should just bit eth ebullet and start working on it as a core game function. You're half way there anyway.
And I don't think you understand what 'a large margin of your community' means. But I guess you just don't want a much larger audience and market increase. But hey, that's fine. Always other people out there willing to take up the potential.