SDF Macross was animated over 25 years ago, lets not be all happy because Frontier looks better than it.
And I forgot who pointed this out earlier, but I think the real discussion to be had is about consistency in the art, and not the animation. Eureka Seven, Planetes, Mushi-shi, they all looked the same from the beginning to the end. Gurren Lagann is the one that reminds me most of Frontier, including some serious issues around episodes 4 & 5 (and the backlash that came out of 2chan). I think (for those of us who have seen it) that in the end, they ended up doing just fine. Its a worry, but right now its only one episode. If five episodes from now this is still an issue, I think we'll see a few more people concerned with it. As far right now I'd say the story, the CG work, and the backgrounds have made up fr any shortcoming in the 2D animation. And I think its the story that will end up making or breaking Macross F (and so far its making it).