Here’s something that doesn’t have an immediate impact now, but will be useful down the road: Francois Tigeot has been working on DRM support in DragonFly, and has been quite successful with Intel video support.  His strategy has been to adopt Linux methods where possible, to reduce the amount of support work.  The payoff has been excellent, and prompt,  accelerated video support in DragonFly.  The most recent work is “git: drm: Implement parts of the Linux irq subsystem“, which is going to come in handy for someone, I’m sure.