How do you plan on keeping it sane over time? Even disregarding paring down the number of times managed major providers appear on the list (which is super sensible imo), won't it start to get quite crowded with all the open source competitors appearing?
The CNCF storage WG is also looking at creating a "zoomed in" version of the storage section with higher fidelity information. That's one model of providing more detail.
We also have an interactive version of the landscape coming that will provide filtering, zooming, etc.