Lets just face it, Power Armor is a huge step up in Fallout 4 than any previous iteration. So much so that it rightfully feels like a vehicle that you get into like a tank to cause devastation. But I feel that its design in theory is dated.
I have come to the realization that the power armor has huge amounts of potential. Im a big fan of weapon systems on vehicles like the rocket pods on a Apache gunship, or in tanks, or even our beloved predator.
Point is, I imagine that power armor can have its own computer and weapons systems for auto targeting or at the bare minimum have dumb fire rocket pods mounted on its shoulder.
The list can go on and on but I think the idea of having the power armor itself as a weapon is a facinating thing. Just like a real aircraft like an apache has a limited amount of ammo and has to fly back to base and rearm, we could bring our power armor back to base and rearm it as well because in the field we will only have a limited amount of ammo for our devastating weapons.
The weapons systems can be automatic like shown in this video of mass effects destroyer class or they can be controlled by the player but I think have both options would be essential, especially if you are controlling your weapon in your hands.
Bottom Line: I would love to see this added in the DLC and I think there might still be time for something like this to be included. If Bethesda puts the mechanic in, Im sure modders can take it and expand upon it.