I've only seen up to episode 20, but I'm loving GokaiSilver. He's interesting, and I like his upbeat attitude. I just don't like the whole cellular henshin method and yellow visors for his helmet. At least they didn't take long to add him to the group.
Episode 20 was mostly focused on GokaiSilver, same with 19, with a little of green also. It's nice to see characters from the past Super Sentai, not only that but also background stories for each of the characters (something Goseiger never did). We even know where they got their powers (something also Goseiger never did go deeply into).
That's all, I think this season is better than Goseiger in many ways (I wish it didn't).