Well, it seems that the Una-Hans project was only ever a one-man project.
I think there are still relatively few Swedes active in WikiTree, we have to be lucky to find people descended from the same founding couple. The Stockhaus descendants have done quite a lot - there isn't a project, but a category: https://www.wikitree.com/wiki/Category:Smedsläkt_Stockhaus We have also been lucky with some founders in Skinnskatteberg (without particularly highlighting them - I guess that should be done :-)
That said: you are very welcome to do something similar to the Una-Hans project. Do you need help creating a space page? It's "Add New Thing" in the Add dropdown. And it's fine to name it on the same model as Una Hans släkten.
I took the liberty to add the category [[Category: Kända Släkter i Sverige]] to your Hanna-Asmund page.
If you make a category for descendants of Hanna and Asmund it should have [[Category: Kända Släkter i Sverige]] as it's parent category.