I think you’d have to do bent lamination to make the legs out of wood and have them strong enough, but I like the metal better anyway, though maybe instead of black you might go with an oxide (tape) color - it’s been a while since I looked at magnetic tape, don’t remember it as being black, but maybe some were. I’d make the legs the right width to be the tape for the scale of the cassette.
I do think the project looks very cool. The idea came to me of making a transparent case around the whole thing which would just happen to make the table top flat, but thought would be lots of work, crazy expensive, and it probably looks better without it.