OH GOD YES!
I will try to describe how I understand orginal theme for weapons: Both BLU and RED teams are at work. Their job is to kill other team, so they need some good work tools. No fancy toys like spy got (Ambasador, L'Etranger, Your Eternal Reward) and no rubbish weapons (Pain Train, Warrior's Spirit) they need to be well made solid weapons that will serve them for a long time. They are using them often, so they have to take care of them. Their weapons have to be clean and neat (no blood - Ubersaw, Claidheamh Mòr; no rust - Persian Persuader) because otherwise their employer will deduct from their salary. They also shouldn't describe class character/nation because it should look like they got weapons form their employers only for work and employees have to give them back after work. So basically weapons should look like often used but still good tools that will be usable for long time. And of course remember about time of storyline.
This is one motivational post.