I agree with some of the sentiments expressed earlier.
This is a really worthy endeavor and I like the way the points are shaping up
Design-wise not so much, it's just not doing it for me. I know these things are subjective but it doesn't look polished or professional enough. Basically I think it needs to at least feel like it's taking a lead from the design on the site it is linking to.
I think this opens up a wider issue that the community needs to address - brand consistency and quality control of marketing material. Is there anyone in the community who acts as a kind of brand guardian who these things can be funneled through? Do we need a brand book? Even a basic one (i.e. which fonts and point sizes to use, what color palette, use of logos etc etc). If not do we perhaps need a person/team with the right skills who will take ownership?
I'm not a designer, but I have experience that I might be able to lend to such a team if people thought it was a good idea to set one up. I also think things like taglines really need to be thought about very carefully and voted upon by the community before being bandied about externally. How can we democratically handle this. My intention is not to offend, just to improve things
Thoughts....