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of all the 40k armys who would be better off with taking kroot mercs?
kroot are cheap, good against infantry, and fragile...so personaly i think iyanden eldar would most likely be a good pairing, since there elite, low in numbers, and capable of dealing with heavy armour on there own.
.....so what do you guys think
It seems to me that lots of elder playres choose to take a squad of kroot, and I'd agree that eldar have uses for kroot in their force.
Other than that, not a bunch of choices with all the restrictions, but I'd say certain csm armies could do good with them for counter assault or adiding in infiltrations.