This sounds like a big project—congrats on releasing it! Just curious, as a business other than a hobby, do you have enough resources to see it through?
Everything we do is bootstrapped through donations and volunteer development time. When our main other core contributor graduates in a year, we'll need the funds to hire him, so we will be pushing that donation angle more in the coming year as well as applying for grants. I personally would like to be paid eventually, but I'm well-equipped to keep at this for a while before finances become a problem in my life. I can be not paid, but can't pay others. As a project, we have longer-term business plans that let us stay sustainable and independent and not wholly dependent upon donations: a combination of asset store payment processing, cloud document storage, and render farm services for people who wish to opt into paying for those value-adds that are otherwise not part of the main product. A decade from now, I'd like to actually recoup my investment, but I don't want to sell out to investors.
Yours is the sort of project where if I had a boatload of money I'd just find it no strings attached through your project forecast. This would be such an excellent tool for artists with light pen integration.