I don't believe there is a plan for replacement yet. The justification for snapping Chromium seems valid to me. I don't know if the same conditions exist for other commonly used software.
That said when the different bugs do get ironed out maybe it will make sense to increase the number of default snaps.
A little disappointing since snaps still have Windows 10-style unskippable updates and don't quite integrate with the system as normal deb packages would. What other debs are planned to be replaced by snaps?