Welders are not used for welding each other anymore these days.
Just my opinion:
I really liked it in some patches ago , that marines were able to weld each other my pressing "e". This was some great part of squad teamplay. Nowadays you just run to the armory and hump it. I seldom buy welders because I think they are waste of res most of the times. Only when really needed to weld a building, I buy them. When marines attack there is often an armory which makes welding other marines obsolete.
I think that this is a loss of teamplay. In my opinion armor repair should be removed from the armory or atleast reduced so that it takes longer. (note: only for the armory not for the health!)
Welders should be free after upgrade (for the loss of switch ax).
What do you think? Welder should really be for free in my opinion because otherwise it ends like in ns1 . People rarely got welders by the comm or used them. (atleast not properly).
oh and where did that feedback key in ns2 go? does it still exist?