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I think it could work, Marauders are on par with most regular infantry.
Would you want to back it up with monsters or chariots?
I think magic heavy would work best, for support and offensively.
I was planning on doing just that, but with a unit of chosen and DO's or Trolls
I don't see it being as successful as a normal warriors of chaos list especially when it comes to combat resolution. This doesn't mean the list wouldn't work though. You definitely need to have something that can actually do damage in your list to make up for the lackluster offensive power of the individual marauder.
You'd have to either go magic heavy or get a bunch of chariots, or bring in some monsters. Even putting in melee heros with your units could provide the difference needed to make this army really shine.
Best of luck with the marauders.