As you know, I'm not a fan of Marvelverse Loki. Though I find it increasingly hard to hold out against Mr. Hiddleston, who has a sneaky tendency of doing endearing stuff (like giving interviews to Miss Piggy). As for his acting, he's good, but I don't think you're missing any immortal performances so far. (I was immensely amused to find him in a bit part in Miss Austen Regrets where he's a shy vicar romancing Jane Austen's niece and sports a head of blond curls which I was told were actually his natural hair.)

Most TV or screenwriters somehow seemed to think that Odin is like their idea of Zeus, which actually has little to do with Mr. Hit-On-Anything-Even-If-It-Runs-Away, and a lot more with Arielle the mermaid's Dad (or rather, a kiddie book variety of the Judeo-Christian God), which tends to be a bit irritating. (See also: bad guy Hades. Lives downstairs, must be evil. Sigh.)

Triple sigh. Odin is so not Zeus (neither the Hollywood version nor the mythological one), and Zeus is so not Hollywood Zeus, either. As for Hades, no kidding. As far as Hollywoodized tv versions of the gods go, I have to admit to a soft spot for the Xena ones, where the scriptwriters have at least a sense of humor about the clichés they use. Also, Ares was hot. Otoh, as far as the actual myths are concerned: Yuletide regularly delivers great stories using both Greek and Norse myths, so there's at least that.