Right now MP's have a few creation weapons that really don't do much damage.
Here's a suggestion that would be cool.
Take weapon, combine with camera
take result combine with calculator
combine result with empty instruction disk
make instruction disk.
then bar mp's from using normal weapons, only created weapons.
Why?
RP. and Nano pool or other bonuses that come with created weapons.
It would also allow mp's to use the full range of weapons, and might just be a bit cheeper for them too.