Well, maybe I'm getting old but it seems to me that it was only a month or two ago when, dreaming of the post-corona, I went to the tool to play. (I thought) it had the old-style format, where you specified the entire route, went to 'choose flights' and only then picked the date for each sector. Now, selecting the dates before going to the choose flights screen struck me as new and better. Also, now, it suggests the three shortest possibilities for each segment but you can 'show more'; I remember the 'show more' as being enhanced away back about '16 or '17. Moreover, I didn't remember the 'wait 120 seconds, we're searching and pricing your itinerary', which is a lot better.

Before, when constructing the route, I would often get this error message:

Your trip may include two stopovers over 24 hours in the continent where your journey started. ... Additional stopovers under 24 hours are permitted in your itinerary. Please select a different date or flight

I had to specify a complete trip, back to the starting point, then choose dates such that the first stopover in the continent of origin was less than 24 hours, save the itinerary, then go back out and add the second stopover near the end of the trip. Now that the dates are chosen before the flights, that 'error' is a lot easier and less frustrating to overcome.