I watched it last night. Overall, I was pleasantly surprised and really enjoyed it...but disagree with you on pretty much everything else.
I thought the score (well, the songs) were dreadful. I just kept thinking to myself, "Oh please, PLEASE, don't sing." Thankfully, there weren't a lot of them. I enjoyed the look of the North Wind, and the characters in general. The creators clearly weren't looking to replicate the design of the Rankin/Bass specials, but they managed to create their own homage-filled look that fit in nicely with the existing Miser Brothers design.
I was completely shocked that this whole thing was even made, and couldn't believe I hadn't heard about it earlier. I mean, Mickey Rooney and George S. Irving reprising their roles? I couldn't believe it.
Anyway, I do agree about the script though -- but it wasn't NEARLY as insipid as I thought it might be (or as that sad, sad Rudolph & the Island of Misfit Toys thing).