I think it would be nice if we had some easy to print 3D symbol plus the Marvel Mods text to the right.
The characters wouldn't have to be a bunch. Just make several banners with different characters in each and we'll have it rotating. ie- Fantastic Four in one; then the X-men; Spidey, Venom, & Dr. Oct in another, etc...
As for banner size, just work with this
minus what's left and right of the black gradient.
Thanks for any help!