I like how Salamander retains previously created folder names in the "Create Directory" dialog.
My suggestion is for Salamander to propose a new folder name based on the current selection in the active file panel. This could be an optional setting controlled by a toggle in the dialog.
For instance, I would like to select a file or folder, press F7 to display the "Create Directory" dialog, and have the name of the selected file or folder appear as the proposed text for the new folder name.
Thanks for listening!