Please make a Selection Filters drop-down list next to the Worksets drop-down list.
We should use the Selection Filter first, then 'draw' a selection window, thus selecting ONLY the elements we want.
Current Revit method of 'selecting first, filter after' it's totally annoying and counterproductive.
Also, please create selection buttons for 'Select only assemblies', 'Select only groups', 'Select only individual parts in assemblies / groups', just like Tekla Structures has. Fast selection saves a lot of time and reduces the number of mouse clicks significantly.