What inflation?
The inflation in WOD was caused by the easy money coming for garrisons, multiplied X times by having X chars/garrisons.
Unless they build an exact replica of this situation in Legion, which seems not to be the case, we are gonna have a deflation in Legion.
I will go even further, after the initial release of legion, i expect token prices to go down a lot, except if we are given another easy money maker, or the token prices are not set due to the normal market interaction.