I've just discovered a few of this community's laser mame displays. And I'm pretty blown away.
Although actual LASERs are probably a long way off for me–I only comprehend a small fraction of these discussions–I can't help but notice this community has made more progress with actual vector output than the (much-larger, but less technically-proficient) arcade community.
Cutting to the chase, since there is no MAME support for xy output to actual vector monitors, I'm thinking your mame laser projects are a better starting point for getting xy output to a vector monitor.
Anyway, I hope to learn a little more and eventually try out this crazy idea. Thanks for listening, Matthew