You already know my feelings about the writing thing - prose writing and filmmaking are two very different things, so you're literally fishing in two different ponds on different sides of the Earth for participation. Script writing always seemed a better fit for a comp that has filmmaking as the other half.
Now that my financial situation has stabilized, I (or TMU technically) would gladly help sponsor with cash prizes, though on the filmmaking side I think you've always been amazing with the prizes you've gotten from sponsors. But on the writing side, definitely...
And one other suggestion - if you're not tied into using a specific domain registrar with your current hosting, you might look at moving your domain to google domains. Flat $12/year WITH domain privacy (so your personal info isn't out there - for example, I do a whois on the Passion Comp domain and I see your name, home address (I assume) and phone number. With privacy, all that stuff is hidden by a proxy - for example, mine says "on behalf of tmoaradio.com owner" for name, with address and phone number of the proxy company in New Zealand that google domains works with) - it's the best deal I could find with privacy, and I moved all of my 15 or so domains over there as they expired this past year.
As for the hosting option, I will look into that. I am locked in until January 2017 but will explore the options.
Funding -- I have considered such things as crowdfunding but not sure how that would be received. A specific amount would have to be determined (unless the money is carried over or the prizes increased to reflect the donations) and how to divide it between the categories and operating expenses.
Writing thing (as you call it) -- As I tried to explain when the whole concept was brought up, I looked at it as many films (tv shows even) are filmed due to a book or short story adaptation. Hence, write a story that could be turned into a short film. I thought about the script concept but would be uncertain as how to even judge that. People like me only wrote dialog with a few scene describers included where others might be more detailed and a screenplay would have much more. That is still an option though.
Prizes -- Even though I have had success in finding sponsors for the competition, it is difficult to maintain them when participation is low. As many noticed for 2015 we had to set prizes by entries received. We lost Scrivener due to the lack of entries and may not be able to convince Final Draft to participate again.
Trying to convince companies to sponsor is sometimes fairly easy by showing the longevity of the contest but the low participation forces some to shy away. By offering the same software every time I feel is also one of the drawbacks. Some don't enter since they have no need for the prizes offered. Even though the software is the latest versions, that still is not enough to convince them. That is another reason adding cash awards might help but I think those amounts would have to be substantial enough to grab attention and hold it.
Every year is a work in progress on trying to improve the experience. That is why I am always looking for feedback.