Working and being MUI are two different things. Working just meaning that e.g. a missile moves towards targeted point 800 units while MUI to me is those missiles multiplied by a great amount. Sorry if I confused ya but that's how I know it.
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and does hero contests now require you to make it like a resource hero spells? before it was all just about the hero. was the rule changed?
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I don't get the part "resource hero spells?". The spells are so important these days, you can just count it, balance, synenergy, fits with hero, visuals (goes along with fitting as well) while other stuff that is not accounted for among the spells are size of the model, model chosen and such.