Just as an update, I got into contact with someone who has done their own capture of the Matrix on Laserdisc, and unfortunately it appears that the LD master is the EXACT same as the DVD, color grading and all (top DVD, bottom LD):

So there is no real point in doing another capture, since you can pay $2 for the DVD and call it a day. I would however like to shift focus on attempting to get the Hong Kong open matte LD (if the people who posted pledges are okay with that), which is definitely way harder to find but I’ll keep a lookout for it.

Thanks!
-Josh