From my point its a mediocre route.
The lack of TT kilometers and even more the lack of hard multi mountain stages doens't allow a good rating. Also some less sprint stages would be also ok.
However I don't think the route is that bad. There are many positives:
++ Mont du Chat stage is great.
+ It's an diversified course with different types of mountain stages: HC MTF, 2 Kat 1 finishes (one with mountains before one not), downhill finish after long but not so steep HC pass, one downhill finish after a flat section and a very steep pass, an ultra short stage. At least there is some creativity in this route.
+ Peguere stage is good in my opinion. Obviously in 90% of such stages nothing happens, but in some cases it does and then it can be epic.
+ Galibier stage is good.
+ Belles filles and Peyragudes are ok.
++ And unlike the last editions the interesting stages are mostly well placed. Mont du Chat stage is before rest day, Peguere before two days of. Galibier stage might be better after the Izoard stage but I don't think that this is a big issue, since the finish is not to far from the top of the Galibier, it's the second last mountain and it's harder than the last mountain stage. So if anyone needs to put some time into his rivals it would be stupid to wait for the Izoard stage. Of course Sky may mostly neutralize this stage but as we learned this year they can do it with any stage.
Thus I think some of the critics are a bit exaggerated, in particular when this route is rated more negativ than the previous editions. Of course there are big negativ aspects (lack of time trial, big mountain stages), but these issues were also valid for the last tours. I think this tour is better than the last ones, mostly for the Mont du Chat stage and the good placing of the interesting stages and the mix of different types of mountain stages.
I gave it a 6.