Since being a UCI bureaucrat seems like a good career move, I'll start a debate here about an idea that came into my mind.
Given yesterday's situation in Itzulia time trial, that retired any interest that a spectator could have to watch the race with the start times of the key riders, losing indirectly appeal for the sponsors of the race, should start order be standardized?
The problem is not present with TTs that are held in the middle of the race, with the GC timings giving us the start order. Should prologues and Stage 1 Time Trial order be set by UCI ranking, with each order within the team be set by the ascending UCI ranking of the riders selected?
I don't know if UCI rankings is the ideal metric for what you wish to achieve. For the moment that would seem like a good solution, but i think not very long ago, such a list would have had guys like Sagan, Van Avermaet, Boonen, Cancellara, Gilbert etc in prime time, and other than Cancellara, nobody would give two craps about how those other guys were going to do their TT, neither would they themselves for that matter.
Then you also have guys that are certifiable outsiders for a 1 week stage race, but simply don't have the points to back up their claim. Mas, Bardet, Bernal, Van Eetvelt... are currently outside the top 50 on the UCI rankings. Compared to the top 5, they would possibly ride in completely different weather conditions (be it better or worse). Perhaps looking at UCI points gained in WT stage race GC's would be a better option if your intent is to have all the GC favorites close together. Or combine that with UCI points from ITT's. Because now Tarling is 98 on the all-round UCI list.