Stop making duplicate bins when importing sequences. Merge them.
When bringing in a sequence from another project (dragging the clip from one project pane to another), Premiere adds all the needed new clips in their bins, but it adds the bins even if my new project already had the same bins. So I end up with two Audio bins, two Footage bins, two Edit bins etc, often with their own sub bins.
If I already have a bin with the same name, the footage should go in the existing bin rather than making a new one.
Not every user wants to 'just merge everything', but it'd make a nice preference...