OWL Show Match

Would an event or organization be allowed to host a show match between OWL teams or would blizzard stick their dreadful all mighty cock of power into it and say no. Is there any rule or statement about this?

None that I know of, but it would have to be in the off season, and possibly be in some way part of the 5 tournaments each Orgs is allowed to run. I have no clue of what the logistics would be like but I think the Orgs themselves aren't allowed to participate in any competition w/o Blizzard's permission, as is standard in most sports leagues.

I mean that’s kinda what preseason is.

I would assume they'd be allowed to do it on their own completely disassociated from their orgs and OWL too. Sort of like Hulktastic.