Obsidian needs a standard location for icon packs
I noticed that I have several plugins that utilize item packs and even if they use the exact same icon pack they don't register that I already installed it and install it again under their directory. I think it's pretty annoying, especially if some plugins help you with installing some nice icon packs others don't use. For consistency and to avoid duplication, it would make sense to have them installed in a icons folder in the .Obsidian directory rather than the plugin one, so all plugins can see if it's installed there and utilize it.
Since it's really popular to change icons and Obsidian itself now offers to change the icon, I think the feature is warranted and should work similarly like the CSS snippets folder. it doesn't need to be there by default, but if you choose to use icon packs, you should have a common location for it.
I hope my suggestion gets positive feedback.