Very quick, a lot of people have brought it up online, so I won't go into detail. Yes, the 3D animation is ugly, no its not the rest of the show, thankfully. The intro for Unlimited is better animation wise, but doesn't pack that same punch the original did though, so pick your poison.
However, being honest, there isn't much to say that wasn't brought up in Batman the animated series, Superman the animated series, or Batman Beyond, with the only part being the pacing. From what I've seen for this review, which is just over a season, all the storylines are multiple episodes long. There's no one episode plots, everyone taking two, or even three, which I think works in part. It does mean that nothing feels rushed, and with a cast this big, you need that. But the individual episodes might help with the pacing, making the two or three episodes more of an event, rather then just a 40 minute episode. I know it doesn't sound like much, but it is more tedious to watch multi part episodes, it just never feels as bad because they're more like events, so to get them all the time here is a bit of a drain if you marathon them.
If you liked the Batmen shows and you liked Superman, then you'll like this if you haven't seen it already. I know its a cop out, and I'm sorry for that. I have something to make up for it though coming soon.