This is a salient point. Ghost wolf will work indoors, which will help hance with any kind of large-scale movement very significantly. The 15% movement speed buff will help with the small-scale movement.
The setup time of hance isn't really a problem, as there are other specs with the same issue that do fine.
Given GC's comment, I think the issue most likely to be addressed is the autoattack-driven damage. Something like 70% of a hance shaman's DPS is autoattack-driven (procs, MW, etc.). This means 70% of the time you spend moving is completely unrecoverable. I'm not aware of any melee DPS this high. Rogues get into the 60s right now because of instant poison, but rogues also can recover the majority of their active damage after moving due to energy pooling.
So, first, we already know they're hitting the instant attacks. LL and SS are both slated to be pretty massive compared to live. The mastery bonus will provide a significant increase to your shocks and LL, so that helps. However, mastery also increases your MW procs, fire totems, offhand procs, and shield procs.
My guess is that hance will see one or more of the following:
1) More damage shifted to LL/SS/shocks
2) MW procs changed to either
A) only proc off of instants (but proc reliably) (and maybe not stack as far)
B) proc off of something that isn't movement-limited, like searing totem
Potentially, they may include "while running" buffs like they've given SP/boom. This would have to be limited, IMO, to ghost wolf movement. Else you could just shake back and forth (like many melee already do
and get the buff. So maybe something like "For every second you spend in ghost wolf form, your Feral Spirit cooldown is reduced by X seconds." X would be balanced to provide hance whatever "movement damage recovery" they need to match design goals/balance.