While I think most of your negative comments are bordering on nitpicking, I'm glad people are still watching this show. I personally dislike the strange static line shading they used, but I bet I will get used to it in time.
Alicia was cute, strange maybe, and a bit dumb with her hasty conclusions, but cute.
Welkin is smart. This makes for a good combination that kind of reminds me of Allison and Lillia, only with better characters.
I don't think it is underwhelming, but that is only because I have learned not to expect too much from game adaptations after Tales of the Abyss.
EDIT: I am hoping this show is 26 episodes. Otherwise, the anime line up this season is quite dismal, and if this show ends like crap, it would be much worse.