Deeg, it most likely is but almost as certainly I would balls it up. However I do have my chippie mate coming round on Monday to finish off a couple of bits in the kitchen and the idea is an interesting one that I’ll put to him.
A combination of some of these ideas could really work.
If you have a filing system eg alphabetically, by artist by label etc I find it easier to insert new items or move things around when you have plain shelves rather than slots.
Ian Edwards of Harrogate makes some lovely storage units. Elegant but pricey!
I have three of their open shelf units to store my CD’s in a cupboard under the stairs (each unit holds 660 CD’s).
Not sure if it’s what you’re asking for in the OP but Ikea do these shelf inserts for their cube storage. Convenient for keeping CDs and records stored together