up!! this would be a great QOL feature.
For anyone else who are also looking for this in the meantime however, the workaround I pieced together is first using the Waypoint plugin to generate all notes of a folder as an outgoing link in a single note.
Then, I use the Bulk open selected links plugin to open all those generated outgoing links in separate tabs (though this plugin gives you the option to also open the links in separate windows or panes in the settings).
Something to note is that the Bulk open plugin seems to only work with Wikilinks. As a markdown link user, I just set-up the Waypoint plugin to generate in Wikilinks format. : )
For anyone with a better workaround, please do inform me! I find this solution a bit too convoluted.