No fuel points or ammo points are worth losing a tank production.
Because of that i can say there is no further need to punish OKW players for its T4 placement.
This is exactly the reason why the Tiger and the Jagdtiger require T4. The risk of putting T4 at a greedy position on a high resource point is not worth the reward. That's why the risk can't be removed. Otherwise there would be only reward. If these tanks didn't require an active T4, players planning on rushing a Tiger/JT would be able to simply put their T4 on the fuel to create a free no go zone for as long as the T4 can hold it and losing it wouldn't really matter (assuming the call-in will close the game). This is already the case with the Tiger II, but at least that one requires additional teching costs.
The base line remains the same. T4 can be used as a free area denial tool in a relatively forward position where it can still be defended. Greedy placement should be punishable. And if a player is planning on getting a call-in, they should place it somewhere safe.