It is impossible to look beyond Froome, unless he loses his appetite, suffers injury, or naturally declines with age. You would need to somehow combine the strongest aspects of an on form Dumoulin and Quintana to compete with him.
Can Quintana regain his climbing form and improve his TT to limit the losses? Probably not.
Can Dumoulin extend his TT gains and win the tour a la Wiggo by defending in the mountains? Probably not.
Having said all that, it would have been great to see Froome versus Nibali in 2014. That could have been a real battle.
It is impossible to look beyond Froome, unless he loses his appetite, suffers injury, or naturally declines with age. You would need to somehow combine the strongest aspects of an on form Dumoulin and Quintana to compete with him.
Can Quintana regain his climbing form and improve his TT to limit the losses? Probably not.
Can Dumoulin extend his TT gains and win the tour a la Wiggo by defending in the mountains? Probably not.
Having said all that, it would have been great to see Froome versus Nibali in 2014. That could have been a real battle.