I've also looked, but haven't found any good crochet patterns for ESO. Most are based on Skyrim, hence all of the viking hats. My husband and I are also obsessed with ESO and I wanted to start doing some projects for it, so maybe these ideas will help you with your creativity.
I would love to do the three alliance banners! I personally want to cross stitch them, but these would probably also work as a blanket or an actual banner for crocheting. There are images for each banner that's more rectangular that might be even better for a blanket or pillow (I could find those for you if you want to do that project).
If someone could make patterns for the alliance banners, I'd be eternally grateful! I don't have any pattern software, so I need a pdf copy of the pattern. I'm working with 18ct aida and want to have the length between 12-20 inches, whatever is possible with the image and detail. I'd like to have the number of colors less than 25 for each banner to prevent confetti stitches, unless there is too much loss of detail. I don't know why two of the three banners have a dusty background, but I'll probably omit this when making the project.
Another project I would love to make is the ouroboros of the three alliances.

- ouroboros.png (9.8 KiB) Viewed 18177 times
I want to do this project on 18ct black aida (my eyes will hate me

). The size of my fabric is limited to 15 inches, but I'm fine with a small border if need be to fit the image. Ideally it will be only two colors, but it's fine if it has less than ten colors.
Hope these ideas help you in your search of a project.