Give it the theme of a traveling zoo of the warhammer world

I have decided in the current gaming economic climate the real trick of the moment is to game smarter...... my current project is my Warriors of chaos, which I am then going to try turn into a beastman and daemon army using pretty much the same models..... so long as the theme is there you could get away with proxying models ..... just my opinion anyway....
Much what I was thinking, using models you already have... although most of us don't have 3 armies let alone the right combination of models to do it.
If you need any warrior models, I have a unit of LOTR orc models which I was using as Marauders. they might be able to double as ungors if you needed.