The ones without a CD-ROM seem to be less common. I'd keep it as-is, personally.
Interesting observation about the Snow White line. The CC had this line, but it's not too visible because of the buttons. There is no line on the CD-ROM equipped LC 5xx series, both tray-loaders and caddy-loaders. It's surprising that the computer would have a line like this, since none of the other Apple products from that period did--even the LCIII+ and LC475 were without this line. Perhaps it's to make this entry-level model look less powerful and more like the older LCs and Classics (and even the SE, which had the same lines)?