Plus, wouldn't you need 12 skinks to make a 4x4 block?
And wouldn't that be super dumb since you need to be 5 wide to get ranks?
and wouldn't that unit cause fear? Unfortunately for people that aren't empire, "detachments" don't counter charge or support charge, and unless something is unbreakable or stubborn on 3 dice with re-roll I wouldn't ever knowingly put a unit in a battle that involves losing, meaning that you can only support by having your opponent WAY outmaneuvered.
Just use the skinks to screen and die when they charge the spear saurus, accept the tactical loss and let them overrun into the saurus, or not, and get charged, their choice really. Then have the skinks help out.
If you really want an effective plan, ignore those skink blocks and do what every empire player seems to think is most effective, (though not fluffy or cool looking) I.E.having swordsmen backup more swordsmen and have saurus backing up... MORE SAURUS! Seriously, deploy yourself an inch or two apart and on the same front line and you'll hit the enemy in the flank if they are touching you, and have a fair shot at it even if they restrain in front of you. It also means that they can't get anything to YOUR flank, because you are one inch away from... MORE SAURUS! Where have I seen this tactic before, where a shitload of buff guys with spears and big shields form a giant wall and roll out, oh yeah, the PHALANX! It worked then, it works now.
Math Hammer.
11 skinks + krox = same price as 10 saurus (no spears)
10 saurus cause.... 4.629 skink wounds
The 'uvver boyz cause... .2778 from skinks... and 1.041667 from the krox. Wow, a crushing defeat for the skinks, even with ranks and outnumber, even getting the charge isn't gonna help much.
What about against empire?
Swordsmen vs Saurus
2.222 kills for the saurus
.37037 kills for the swordsmen
(swordsmen narrowly win if they have similar points costs I.E. 3 ranks)
Swordsmen vs Skinks
.625 skink kills, 1.25 krox kills
1.4848 swordsmen kills
(swordsmen narrowly lose if they have similar points costs, I.E. 3 ranks)
Dwarves (warriors, HW SH) vs Saurus
1.25 kills for the saurus
.37037 kills for the Dwarves
(saurus narrowly win if they have similar points costs I.E. 2 ranks)
Dwarves (warriors, HW SH) vs Skinks
.278 kills for the skinks, 1.0416 from the Krox (1.31 total)
1.111 kills for the Dwarves
(skinks win if they have similar points costs I.E. 2 ranks)
Against many targets with good armor saves the skinks and krox are going to perform well in stand up fights, and they are certainly great flankers against cavalry or the like, but against saurus they would perform quite badly, and much of their wins are only by virtue of greater ranks in these cases, when people can field full units, they'll lose pretty bad, and for flanking, the saurus tend to get better CR on their own, (and have higher LD should the flank fail)