I have to (respectfully) disagree with your comment regarding skrox
We can do a quick list of pros and cons with Skrox units.
High movement - If this unit is hit on it's flank, then the situation, not the unit has gone awry
Javs - Lets not forget that because of wonderful 8th edition, you can ALWAYS stand and shoot, and with poison attacks? Bring it on!
Cheap - You don't need to pay any additional points to make them come with shields, so while a 6+/6++ save isn't exactly Chaos knight worthy, it's still pretty darn good.
KROXIGOR! - Sure you don't get a stomp attack with these guys, but then ... you can't be stomped! And attacks can only be allocated to models in base contact, so you pretty much give up a stomp attack, for a cheap missile screen.
Those things said, not a bad CORE choice
The bad:
Low toughness - Yes, skinks are built about as durable as wood elf pajamas, you SHOULD expect to take casualties
Leadership - Not exactly this units strong point, but we do get the Krox's LD instead of the skinks.
I'm not saying that a Skrox unit is the Be-all-and-end-all of a Lizardman army, but I think it's about HOW you use them that makes them so wonderful. And yes, I think they only REALLY shine in slightly higher point games. Life and Light make this unit a KILLER. I myself, played a game where I used Lore of Light, and this unit ate an 18 strong block of Chaos Warriors over 2 turns. For every 3 skinks I lost, my Krox would kill an equal ammount of warriors, and with the combat rez in my favor, I found a new respect for em.
The long and short of it, they're a Hammer unit, not an anvil. And they're best used in conjunction with magical buffs.
my 2 cents
-Bauhus