Could Lizard Nerfs please be stopped until there's a justified reason to nerf them?

[Mouse]

I will say I'm not a fan of the thermoregulation things that lizards have now, but probably for a completely different reason than that of most people.

Brains are energetically expensive, damn it!  If you have a constant large energy requirement (as opposed to the other major energy sink, the digestive system, which is inconstant) you're pretty much going to have to be an endotherm.