Membership Marketing Campaigns - 'Appeal' Style

Hello, I have a slightly out-of-the-box query about Membership Marketing Campaigns.

We have started brainstorming ideas for an acquisition campaign run in an 'appeal' style - by that I mean calling out how many new Members we need to acquire. For example, 'The best way to support us is by becoming a Member. We need 5,000 new Members by January to help us reach our goal of XX' 

This type of campaign is more common for fundraising activity, but I wondered if anyone has had any experience with this for Memberships? If so, how did customers respond? Any context you could provide would be really helpful, and will help us work out whether this is a good angle for Membership!

Thanks, Chloe