I am asking to consider to add the functionality to open a folder inside the folder tree with a (double) left click.
Back in April of this year I suggested this feature. "In Start11v2, if you set a pined folder to "Open as folder menu," there needs to be an easier way to access a folder within this Folder Menu. As it is now, you have to right-click the folder and then select "Open." If there was a way to allow a double-click or a modifier key+click to open a folder within a Folder menu, that would be an awesome improvement."
https://forums.stardock.com/527259/page/1/#3927258
Neil Banfield, the lead developer replied "Double click might be tricky as single click opens already, but a modifier might be possible."
So far there hasn't been any more information on implementation of this feature.
Thanks for suggesting this feature, as I would also really like to see it implemented.