Before saurials, before sarkriths, before even khaastas, even back in 1st edition, there always were lizardfolk. And even though it still describes them very well, that name is... a bit disrespectful. You don't call elves "long-ears", or goblins "greenfolk", do you? Well then again, you call dwarfs "dwarfs" just because they're a bit smaller than humans, and drows are literally known as "dark elves" by most people. So yeah, the common language is pretty heavily human-centric and denies other races most of their culture and specificity. I propose we riot to have dwarves be called whatever they are called in dwarf language.
Lizardfolk are in a weird situation. On the one hand, they are so obviously stronger than the gnoll that it isn't even funny (three natural attacks and +5 natural armor is absolutely nothing to scoff at, even with -2 Str/+2 Int, compared to the gnoll), but on the other, two Humanoid RHD is still too much for them to be really useable. While I didn't go for it with the gnoll, I believe the Lizardfolk are strong enough that I can use the method PoeticallyPsyco suggested for the gnoll. I will say 1 RHD, +1 LA for the lizardfolk. The RHD is replaced by the first class level, leaving it with +1 LA, which seems acceptable without being immediately better than the gnoll. However, with their 2 RHD, I really think they would be way too strong with DLA-1. Lizardfolk's characteristics are comparable with what a totemist can do at level 1, plus the ability boosts. So I'm going with DLA-0, and sorry to everyone who wanted to play them with DNLA.
And hey, if you really think they are too weak for their ECL, these are scaled-ones, so you can Pun-Pun cheese to adjust their characteristics as you see fit to get to the exact wanted power level. Isn't that nice? And next time, we will have the Locathas! I can already hear them bubbling in hope.