The Flatpak is already packaged and works well. It just needs to be maintained from a person that joins the Inkscape community.
This would allow further improvements like Portal support and making the app official on Flathub.
Update: One might have been found!
Snap is a cesspool for malware and shovel ware. The best apps are packaged by Canonical. Also, when people still cared about Snap, there were frequent reports of incompatibilities because it was developed with Ubuntu in mind.