I know it's expensive and it is no less useful if a territory is required to be captured/owned first before it can be placed. This stops abusive players rushing their infantry to the forward most buildings and shutting down a game before it can even begin. We are talking about within the first 2-3 minutes and the game can be over.
If you want to the commander to not be about getting an early win it needs to be better late game.
i know it is tough, ive faced the FHQ several times myself and it was a pain. It is difficult assaulting the FHQ due to the infantry aura, so MGs and mrotars would be your best best to manpower bleed the enemy. The mortar halftrack comes out fairly early and has the brilliant incendiary barrage which can scatter the enemy. YOu can do this on fairly low cooldown and wait for your teammate to build a Stuka.
Coordinate with your teammates to lockdown that area to prevent the enemy from moving forward. You can also try to cap other places in order to force the enemy away. I think th number one priority is to keep them contained in an area and and to prevent them from "leapfrogging" FHQs
At the moment I think this Commander is in a nice place
It's not powerful or common enough to be THE META
But it is out there, and you should have something ready to deal with it in your loadout and be ready to select it if the opposition have it available.
The HQ is not a retreat point so simply suppressing the enemy units around it MGs will render the harmless and they will have to retreat at some point
The building itself can get taken out by an incendiary barrage or two from MHTs; though you can do the job with conventional mortors.
You absolutely do not want to get in a infantry or mortor duel otherwise where the enemy is in a healing and reinforcing aura and you are not because you bleed MP very quickly.
This is where you cordon it off, go elsewhere and deal with it with the tools available.
If you can deal with it, your opponent just sank a lot of fuel into it and this commander doesn't offer much as the game goes on.