Here are some designs made by an Everett company called Luminous Creative
Apparently they were reviewed and rejected by the Seattle franchise, who chose to go with a different firm.
Here they are:
Looking at these kits and logos makes me extremely nervous. Although some sport a different name, the logos are way way way better than the one that ended up being chosen. Also, the jerseys all look slick. Now I am definitely dreading what they are gonna come up with. See my Henry article for one possible option.