@FediTips yes, exactly. We had this in czech Mastodon community too.
All I ask for is to integrate this feature directly inside web GUI of Mastodon, perhaps somehow recycling or reusing the lists interface. So I can share the lists only by clicking inside GUI and not exporting and importing from external files.
Which is also very good and useful, but probably not for beginners, especially younger users. Kind of CSV import wizard dialogue, maybe :-) With lot of icons, less words.