Only problem with that is if there is a crash and the session is red flagged, also what would you do for the remaining half hour? Qualifying does need to take an hour to make it value for money for the fans, especially in the events with few support races.
F1 has a big problem now. It is trying to please most people all of the time and that's not impossible but it is improbable. I've followed F1 for over forty years and from only seeing it now and then, often only as highlights, to the wall to wall coverage we get now, changes have always happened in the nick of time. 2014 will be different but maybe a tweak to qualy' would be a good idea. Not sure much else can be done with it though. All of the previous formats have left something to be desired. One things for sure I for one much prefer how it is now to any of the reverse grid crap and races split into "sprint" and " feature" formats. We've already got other kinds of car racing to watch if that's what we want.
Methinks I'll just have to wait and see what happens and enjoy the end of the V8 F1 era for what it is.
TBH for me Qualifying didn't need tweaking when it did. I was a fan of the one lap qualifying I know it didn't make good viewing, but it was interesting seeing drivers going for a certain time to beat .