Owari no Seraph: For a show that has so many bishies, I didn't expect to use such outdated and terrible looking backgrounds. Besides that, execution of the plot was okay and surprisingly the action scene was actually fluid. I'll stay around another ep in hopes that there is more action, but that is all that is going for it imo. (I still rather have Mokushiroku Arisu be animated)
Re-kan Why does this season have to have so many animes with unfitting or ugly backgrounds? Re-kan however does take the cake with blurry real life scans that don't match the characters lighting at all. Combined with bad shadows, we get floating characters and popup book effects. Well at least I laughed at the jokes so will check out the manga later and make a descision.
Plastic Memories Finally a show with decent backgrounds, except now I'm not exactly sold on the premise. I found it sort of interesting, but without saying what happens when the time limit passes, it doesn't have a great sense of urgency. As for execution, it kept a lighthearted atmosphere with okay jokes, but nothing amazing. Will watch more to get a better feel.
Gunslinger Stratos: Passable art + decent action scenes + a somewhat interesting premise. I can't find too many faults about this except, but neither can I say anything was amazing. I just feel it was slightly above average in every category. Whether or not this will bring me to watch it, who knows.
So many shows came out... time to watch them all.