* Provide unit-tests
* Good types
* No breaking changes
And if you want breaking changes or grand new features to be merged, you have to show activity in the issue tracker or fix open bugs first, to show the maintainer that you are willing to deal with the fallout or support requests that follow after a PR gets merged. This is not to be rude. This is seeing a PR through the eyes of a maintainer.
The reason why projectors don't use a single rgb lcd (like monitors) to produce the color is the same why all sub 5000$ projectors use pixel shift to fake 4k resolution: Too much light is blocked by the lcd itself if the individual pixels become too small.