It sorta zigzagged. I still have a 4 CD version of Final Fantasy VII for PC. On the one hand it came with a Yamaha synthesizer plugin and enhanced music. I want to say the FMV clips were nicer quality too, but that might be me misremembering. It was even possible to mod the PC version, though I only remember a single play-as-the-Turks reskin.
On the other hand, the disk's were labeled Disk I, II,III, and IV while the disk prompts were not changed. Since disk I is just the installer, when the game asks for a disk you have to mentally +1 to whichever disk it asks for. More a problem on Eidos' end (they handled distribution for that version) but still sloppy.