Il Teatrino isn't bad.
It continues right on the heels of the previous season, and yes, it does feature a different animation style than that of season one.
Season one was animated by Madhouse (Vampire Hunter D, Claymore, Cardcaptor Sakura, Perfect Blue), and season two was animated by Artland. Sure you'll be able to tell a few differences, but after the first episode, you are already so re-hooked on the show, you don't really care.
As a bonus, Triela is featured a lot more in this season, with a major part in what is probably the biggest story arc of the series.
My biggest concern right now isn't so much the animation any more. It's the release date, which the people at FUNimation still will not announce. I've asked them about when they plan to release, telling them that their official GG page still shows Coming 2009. Their official response was that it was still very much alive, and was absolutly on its way, just no release date.
Speaking for myself, I am thinking they are waiting on the release so that they can incude the two additional OVAs episodes 14 & 15 on the DVD.