I watched it with the kids last night. So far they haven't had a chance to latch on to the characters, and there wasn't much familiar other than BB-8 and Poe.
I was expecting a very young skew on the style, but didn't really find it to be much different from Rebels. Its kid stuff, but didn't seem any different maturity wise.
Overall it was nothing great, but it was a very introductory episode. We'll see where they go and if they can build some fun characters.