Yes!
Disclaimer: this is not an official answer. It is my personal opinion.
First of all, if anyone wants to offer their 3D models, or any other content for inclusion into DCS World and we agree on the quality and the terms, he/she will need to sign an agreement for transfer of copyright. It's like a standard contract work no matter are money involved here or not.
Moreover, I see no need for the poll. Anyone interested always can contact us directly. Any call for public action will lead to a flood of low quality content which we will have to spend our time reviewing, negotiating etc...
No one wants the hassle. There is already a much simpler way for the user-generated content:
https://www.digitalcombatsimulator.com/en/files/
I'm sure it can be improved - this is the area where your feedback will be appreciated more probably.