Historically, this sort of consumer-oriented promotion has been the community’s lane. There is no prize for increased desktop market share.
So feel free to link up with a current community effort or LoCo, or start your own.
A lot of folks with Win7 are running on older hardware, which may not be appropriate for running Gnome or other full-featured desktop environments. Also, a lot of people with Win7 may not like the UX and application changes they must make when adopting Ubuntu. The transition does involve a learning curve. Promotions should not make promises to those folks that Ubuntu cannot live up to, so reasonable expectations, please.
Gently disagree. We want people to install the distro that works best for them, that they enjoy using. While that’s often going to be Ubuntu, sometimes it’s not. AskUbuntu is littered with the rants of upset folks who misunderstood what Ubuntu is.