Thanks for the comments! Basically I gave the artists carte blanche to arrange the tracks however they liked as long as they weren't completely straight covers and were unique. From there it was working with them to make sure what they were thinking and what I was thinking worked together and that they were sticking to certain guidelines in terms of mixing their tracks. I didn't want to stifle anyone too much on what they wanted to do with their tracks creatively.
Snappleman ended up mastering the whole thing and taking on way more than I originally asked for in terms of contributing to his own tracks and to others, which just proves he had as much passion for the X68000 soundtrack as I did. (late night discussions with him on CV soundtracks back in the mid-2000s can be sourced as the background for that)
I'm glad people are enjoying it and I hope it gains traction in the community, as I really think the end product came together awesome. Especially considering the tarcks done to death (Vampire Killer, Bloody Tears, and to a lesser extent Theme of Simon and Wicked Child) were arranged in pretty unique ways, and the rest nobody barely ever covers or even have heard of outside of niches like here, like Tower of Gears or Load BGM.