Why one of the coolest weapon have to be forgotten
You write it like you think they aren't in by accident. They aren't in on purpose, and the reason why is on page 1 of this thread. The pickup kit idea seems nice, but I really like sabres: does that mean there should be a pickup kit with sabres? Don't think so. The idea behind pickup kits is:
a) to limit the amount of certain types of weapons in a map
b) to let players play with a rare weapon that would have never been in the mod otherwise
Correct me if I'm wrong, but this is how I think it is meant to be. Both reasons aren't valuable in the case of ATR's in Normandy. If you want to fire ATR's (and I agree with you, they are cool), play Africa maps. They are in most server's rotations anyway.