I play regularly with friends and my friends already have most of the dlc maps. I am personally thankful that I am allowed to play new maps with them despite not owning the dlc. As a result, however, I have no personal interest to purchase the maps.
However, I would greatly benefit from a dlc pack offering all the weapons for all characters so far, maybe as some mega weapons pack at an appropriate price (I will not offer a price, and leave that to Fatshark).
P.S: A similar pack for all 5th careers would be great, but am not sure if Fatshark is already planning to do this.