I have made some tyranid mycetic spores by just covering a dreadnought sized base in some green putty to show how the spore burst when it hit the ground. I have seen many mycetic spore conversions and everyone seems to lean towards making them as tall as space marine drop pods. I am worried about using these in any type of tournament setting because they would be hard to draw true line of site to. When I have played against players in the past I have allowed them to draw line of site to the pods based on them being roughly drop pod sized.
This got me wondering if their was a official source for the dimensions of models that do not have official models?
Also if forge world makes a model is it then considered official for base size and dimensions?