Does anyone know what the overall accepted percentage of a unit can be made of unit fillers? I'm working on a 40 man hoard (20mm bases) and have an idea for a unit filler that will be on 2x 40mm square bases, or 20% of the entire unit. Is this going to get me dirty looks for too much unit filler, or is this acceptable? The idea isn't to cut corners and save me from buying a box of models. The idea in my head is just going to require that much space. I'm curious as to what everyone thinks. Thanks!