I think that its major role, after the newness wears off, will be for the most part, used for defensive purposes on most maps.
If one spawns a Tiger for offensive purposes, you just might as well kiss those 50 perk points goodbye. Once spawned, chances of getting a safe landing are slim to none. In a defensive roll, you can be aggressive, and if hurt, chances are you will be able to get back to your field to land/park it safely.
I know that when an inbound GV attack is coming, the first GV I will be rolling out of the hanger will be the Tiger ... on the other hand .. If I am involved in an offensive attack, I will not be bringing the Tiger out of the hanger.
Somehow, don't know the correct solution here, but a safe landing zone (not the enemy airfield) is needed for spawned vehicles. I always thought that this was needed, but didn't seem to be a pressing matter due to no perks were involved. Now there is a price to pay.
I know some will say ... "Hey, they are only GV perks !!!" ... true, but there still needs to be some balance and a fair chance to keep the perks.