I think the semantics of mini-series for a network is that it has an end.
I think finite series gives you more time to write down your journey in any show. When it's a finite series, you know the start and know your end. The writers and actors know what is going to happen, so the interest is not lost.
I always designed 'Gravity Falls' to be a finite series about one epic summer-a series with a beginning, middle, and end.
When I'm working in finite serials, I always think in terms of the entire book rather than the individual episode because, by far, the vaster sector of the project's lifespan will be in complete book form rather than the singles.
The very design of 'Breaking Bad' was that it was a finite, close-ended series.
I can pretty much say all of us know when 'Downton' is going to end. This is a show with a finite life.
We had a great run on 'Reno' - 87 episodes and a movie. Not too shabby.
I don't think I have the power to do more mythological shows, but I would love to if it's like a finite series. But doing that as a daily soap is not easy.