Dokey brings up a good point that I believe warrants discussion. Although it may not be viable here, I've seen way too many WoC lists that don't have enough Marauders to bog, fast units that the LM have down. Getting them into a flank of expensive units is a great tactic especially since they don't tend to have many cheap 'throw away' units that can get in the way.
I agree. Im a WoC player and I always use multiple units of warhounds and marauder infantry/fast cavalry. I think they are very necassary and the chaos warriors desperately rely on them to remain effective. I think WoC are one of those armies that needs "filler" units to be really competetive.
I think the salamanders and multiple units of skirmishers running circles around my army bother me the most. I cant leave out the carnosaur either that thing will make a mess of a warrior army.