A commercial tv hour is about 43 minutes already. 30 mins is not that much less for an episode, especially if doled out say in 10 min increments to web watchers.
A key question will be what the studios care to define as a 'series'. If characters appear in more than one cycle, is it a series? Do the actors have to be the same? Is it reference to backstory / unique assets like ships / etc. published in other fan works (another 30 min work) that makes a series? Is it that it came from the same group of production people? Sharing production assets? Some combination?
One could imagine a self-assembling project wanting to tell a larger story getting together multiple independent fan groups and define a world and characters. Have each group in sequence (having seen the prior works) do one stand alone show that doesn't explicitly backreference events although they share charcters (perhaps by different actors), and isn't deliberately coordinated as a single predefined story arc (that the studios can prove), but which fans could stitch together in their minds as a 'movie'. Like many word games in threads.
Self-assembling fundraising: our Kickstarter wants to contribute an independent production to the "vulcan dreams" art festival starting on June 30. Please fund us. We will conform to guidelines by not directly coordinating with any other production of the festival. Festival curates the security and colocation of the assets funded by each independent project.
Fun one here. Only took an hour to start working around the guidelines that seem to be combatting large story arcs and well known characters being created and massive fundraising occurring.
If I can beat it in an hour, they haven't got a chance of keeping it under control