I have only watched the premiere so far, and quite enjoyed it. The songs weren't very impressive (I ended up skipping pretty much all of the first one). Scar seemed smarter here than he really ever has been in TLG, at least in my opinion. I'm surprised they actually did what they did with one of the characters, considering the network.
However, I do have a couple complaints with it. Firstly,
Janja's redemption felt really abrupt. If this had happened right after The Hyena Resistance, that would be fine, but it didn't. Even after Jasiri saved him, he continued to work for Scar for the rest of the season and never really showed any reticence at all. But as soon as we join him in this episode, he is already completely in two minds about things. It is rather jarring, but the fact that he didn't actually switch sides until Scar actually wronged him first makes it more reasonable.
The only other issue I had was with, and this one is very nitpicky,
Reirei. Specifically, I didn't like that they had her involve Dogo, Kijana, and the other young pups in the fighting and put them even slightly in harm's way. I had kind of hoped and wanted to believe that she and Goigoi were deliberately keeping the young ones away from danger, since only adult jackals had been accompanying them on missions for Scar. And both she and Goigoi had seemed to genuinely care for their pups, so the fact that they would involve them in what they would have expected to be the most extreme of the fights was disappointing.