It's not that we're trying to dodge the issue, it's just that time is tight. A lot of the developers have been busy with real life lately, and the mod hasn't really progressed as well as we'd have liked (several features were pushed to the next release). I think it's better to release a version earlier that the majority of people can play, rather than delay the whole mod to benefit a small proportion. You are assuming that Vista support will be easy, but it could require some major changes. I don't know what MS has done under the hood, but MTA modifies the memory of GTA, and they may have put limits on this to prevent viruses injecting code into running programs (the source of many problems with XP).