Came across this neat project.
Basically it samples a Laserdisc's signal using the RF output directly from the laser, completely bypassing all of the player's processing (TBC, dropout compensation, NR, etc.). From there, the RF signal is decoded by software to actual video.
They have some test card samples here: https://www.domesday86.com/?page_id=1332
Looks like the software processing needs some work, particularly the comb filter (its hard to tell if this is artifacts from the actual decoding or "baked into" the source), but in theory this could lead to a much better restoration down the line as the software decoder improves. This cuts out variables like player and capture card quality entirely. I'm curious if this is theoretically possible with a VCR. One would have to demod the "color under" signal on home formats like VHS if the signal is tapped from the heads, or tap the signal further down the line.
More background on the ld-decode software: http://forum.lddb.com/viewtopic.php?t=2671