>>/47958/
Yes, they will be fairly useful.
The digital architecture is fairly important as well, they mention the possibility of remotely operating the tank already.
As for the gun, it's impressive but it could have been implemented in a Leopard 2 upgrade(they already tried selling that), the same goes for the drone launcher and the Natter, though the digital architecture allows the tanks to get the most out of the drone. There will certainly be a trade off between power and stowage capacity, I'm not sure how many tanks there are that the 120mm can't kill right now so early on that trade off might be in the 120mms favour. Though programmable 130mm HE shells will really hurt any soft targets they come across.