I just bought the Pro Lifetime subscription and I’m loving the extra features, specially the ability to group communities from different instances.
The only thing missing from this I think is the ability to assign an icon to the group. Maybe offer a limited set of options from default icons, o even better, use the icon of one of the communities included in said group as the group icon.
Never used multireddit so I can’t actually compare it, but yeah, it basically groups the feeds of all the communities you want into one feed you can access via the Communities tab in the navbar bellow. As far as I can tell it doesn’t do anything else.