Besides submitting some new banners, I went through all the stuff I missed in the Review and Discussion threads and did a minor revision on the Banner rules (no actual changes to the rules itself, just fixing some wording).
Once I find out if we are sticking with the 1500px wide or going to 1100px wide, I (or maybe Rei) will be updating the banner rules for it (if necessary).
I will add a banner "template" that might help in the banner making process when the above problem is remedied.