They monetize withoutabox, so if you value your time at more than $15 per hour, it is most convenient to submit shorts via submitting to a qualifying festival via withoutabox, then once it has been recieved by the festival, editing the IMDB page.
Mind you, once your film has been submitted to major festivals, you can add your film to IMDB without payment. Might be a bit late for most short film creators...

Interesting approach, thank you for sharing!
As a documentary director I strive to avoid the "talking head", voiceover narrative driven approach. People are what they do, not what they say they do. So for me what's interesting is finding the situations of action, decision, creation, interaction.
On my scale of value, explanation and commentary comes after.

There are many films available today, so before you make one, you have to think how your film is going to reach it's audience. There are only 3 options.
1) You promote your film and have an active campaign engaging the audience
2)You release your film via the "usual channels" available to indie filmmakers, website, social, video channels, and hope for the snowball effect
3)You make your film and expect someone else to promote it, your distributor. Traditional indie film model, get festival exposure, get distribution.
As number 3 means the distributor has to think millions of people will pay to see your movie, your only real option is number 1.
And that is extremely frustrating and difficult for filmmakers, because instead of making movies, you have to do marketing.
So for many indie film makers today the real question should not be "how do I make my film", but "how do I identify an audience before I make a film, and how do I reach that audience".

There are many talented composers and musicians looking to collaborate with filmmakers, many more musicians giving away their music under creative commons commercial.
I would suggest have someone creates unique music for your film, it will often be cheaper than a music library ( I did say FREE!) and it will be unique.
If not, spend the time doing research finding a unique sound for your film.

I love the flexibility m43 form factor has with lenses. A lot of primes available cheap, and adaptors are simple and cheap as there is no glass in them.
So yes, GH4 for me. Though the colors and looks are video-y.

It is no accident that people of merit and position talk about vision, focus of said vision and execution. Filmmaking is an art of communication, from development to screening.
Too often those that speak loudest have the least to show for it.
I love 4k for documentary as the crop is a master and allows to cover 3 to 4 shots with 2 cameras. That's about it. Am I getting a 4k TV? Not likely.