Something I really like about Bluebeam: when you scale a drawing it auto-shows the last scale you used so you can just pick it. Huge time saver since most sets reuse the same scale over and over.
Would be even better with a short list of the last 5 scales used instead of just one, since I bounce between a couple scales depending on sheet type.
Also, instead of scrolling the full scale list, would love a search box to type a partial value and filter it down.