Some interesting opinions here. The suggestion for a team to load up on strong riders for the flatlands and attack Sky on windy/cobbled/lumpy stages (because you cannot compete with them in the high mountains) is not without merit, though would also depend on the parcours offered up.
As for that parcours, I don't believe that it should be chosen in an attempt to defeat Froome. Besides, didn't they just do this? No MTF straight away in the high mountains, less MTF's in general with more emphasis on descending, not a lot of ITT kms, and barely any of it flat.
Next years course should have plenty of ITT kms in it, with at least 50kms of that pancake flat. Not to help or hurt Froome, but just because the Tour is meant to be about deciding who the best all around rider is, and that means an emphasis on the race of truth.
A true Queen stage (220 + kms with 5 difficult climbs) would be nice too, even if that hurts Dumoulin's chances.
And bring the teams down to 7 riders tops. Limiting Sky's strength will help. The good point was made that Froome dominated the time trials. No help from his team there. Not obviously. He'd be tireder for the TT's though if he didn't have as strong a team. It does matter that his domestiques are as strong as other team leaders, because sure, Chris could claw back Fabio and Alejandro on his own on stage 15 for example, but that would mean expanding extra energy, physically and mentally, which would count later. And so maybe he let's them go, and they get thirty seconds up the road, and things get a little interesting. Anyway, if you have 6 riders, then you can't really be super strong in both the flat road and the mountains, which Sky as a 9 man unit obviously are. 6 riders might mean that Sky have 6 strong climbers, but then a team like BMC for example might pick 4 strong roulers, and make things interesting on some other stages.
Congratulations to Froome regardless. Was clearly the strongest rider at this year Tour.