The dramatic reduction of TT kms in GT's is a little perplexing. The perception seems to be that they a) produce too large a time gaps, and that b) they are boring to watch. Well, to me, the fact that they are likely to produce significant time gaps make them automatically more interesting to watch than the majority of stages.
Who wasn't somewhat enthralled by the penultimate long ITT's in 2003, 2007 and 2008?
With a lot of TT kms there is a feeling that a 'climber' therefore cannot win the Tour. But it doesn't matter if you have 200 kms of ITT in the Tour, Rohan Dennis isn't going to win the race (as long as you have at least a couple of MTF's). It will be someone who can climb too. Someone like Roglic, or Dumoulin, or maybe even Thomas or Bernal. Who wouldn't want to see a 50 km flat ITT on the penultimate stage where the situation was something like Bernal 60-90 seconds ahead of the other aforementioned riders? And don't forget that in last years Tour, Alaphalippe actually won the ITT. Okay, so it wasn't that long, and it wasn't that flat; but it sure wasn't a prologue MTT either.
There is no reason why (at least in every second or third edition) you cannot have a prologue, a medium length hilly ITT, and a long flat ITT in the same race. 80-100 kms in total. That might be your template. In other years you change it up. The most climber friendly Tour should be something like a medium length lumpy ITT and a MTT (there should almost always be at least 2 TT'S in a GT imo). Very occasionally you might have 2 long flat ITT's. Let's face it; the 2012 Tour still would have been boring even if there had been only 1 of those in the parcours.
The 'traditional' long flat ITT should probably be towards the end of the race. As we saw in 2008 (and to some extent maybe in 2007), recovery can play almost as big a role as ITT ability.
In this year's actual race, if Bernal is 60-90 seconds ahead going into the ITT, then on that course, he will probably retain yellow. On that course the only way that the ITT will be really exciting, is if the time gaps are very close. And if they are then it will likely mean that the rest of the race hasn't been very exciting at all.
As for the team time trials, I like the idea of them being held only sparingly - a bit like the cobbles - but when it is included, that it is significant. None of this 20 km parade BS. 50-80 kms; in the first week (obviously), with no limited time gaps; all real time gaps are counted. In such an edition you might have less ITT kms, but have some very significant mountain stages. Therefore, there is still a decision to make for the final couple of positions on the team; "Do I pick mountain domestiques or time trial specialists?"
P.S. The French didn't care about forcing Virenque to only focus on the KOM in the late 90's and early 00's because of the amount of TT kms. Why do they care now? And Pinot can TT reasonably well at times. As for Bardet, he shouldn't be in the GC conversation.