In addition to comments others have made about some of the colors being difficult to see/differentiate, I think it would be worthwhile to distinguish one-way defederation from mutual defederation, perhaps with a texture?
It would make the graphic busier, but I also would enjoy seeing population percentages next to each instance name (to give weight to the significance of certain defederations, e.g. how much of the fediverse are you excluding by defederating with hexbear vs lemmy.world).
In addition to comments others have made about some of the colors being difficult to see/differentiate, I think it would be worthwhile to distinguish one-way defederation from mutual defederation, perhaps with a texture?
It would make the graphic busier, but I also would enjoy seeing population percentages next to each instance name (to give weight to the significance of certain defederations, e.g. how much of the fediverse are you excluding by defederating with hexbear vs lemmy.world).