Well, they know what to do. Return to the old style of qually (1hr, 12 laps, two days), and anyone who whines about traffic can be told 'tough ****' as they had plenty of time to get a fast lap in.
They don't need two practice sessions on a Friday (or Thursday for Monaco). So turn one of them into an initial qualifying session. Then a Saturday morning practice followed by a 1hr final qualifying. Fastest lap of either qualifying session determines your grid spot.
There was nothing really wrong with that style of qualifying, and plenty that was right. Those final few minutes used to be absolutely spell-binding (especially when Senna was at his peak). Since then they've dicked around with it (1 lap qual was a complete bust, the ideas since have been no better). Time to admit the experiment failed and get back to doing it properly.