There's a good example of what should have gotten a little more focus at the expense of the super details about lizard society: Brain's character arc.
Probably one of the best parts of this season.
In S1, he goes from arrogant fighter who is reasonably sure he's number 2 in the whole country, if not several (guard captain guy being noted as #1) to quivering baby who found out his ability barely even registers on the full scale of the world. Someone not even worth killing.
S2, he starts from rock bottom, gets bitched out, gets back up, helps useless Climb...
/Ryll is found in a moat with a slit throat.
/Ryll gets resurrected.
...helps Climb gain more confidence after the boost that Sebas gave Climb, and starts helping Climb reach his own potential. He begins to accept that there are many people in the world far stronger than him (like Sebas), but Brain can aid people at his own bracket just as effectively. He's still a master of his trade and skill sets as a swordsman.
Then, when he strikes at Shalltear again, he's doing it not because he needs to prove his strength, not because of his arrogance. He faces her to gain time for the others, fully expecting to die. But he breaks her nail instead.
He's proven that he was never at his peak potential back in S1 and like he discussed with Guard Captain Guy. He still has more places to grow. He became stagnant, and now he's not.
That's a damn good character arc we could have used to see a little more of, and less lizard porn.