I wholey agree with the move to make the GL a seperate weapon as the gl attachment was getting a little bit ridiculus with the zero trade off.
HOWEVER I think it is an oppertunity to support an entirely new play style/tactics and convert the old GL to become a support role and fire specilised ammunition. The model and animations are all there it would just require a bit of coding and a few particle effects :) The rifle attachment would need to be researched along with the ammunition type or perhaps in levels to release the more effective ones later in game. A marrine would have to choose 1 of the list and the capacity is as said. Would take a few seconds to get ammo for these from armoury to stop spamming
Ideas For ammuntion types:
Tracer Dart: (Maximum Capacity of 2) This could be an marrine version of paracite and could be incredibly useful for tracking unwanted skulks and esspecially larger targets such as Onos or Fade. Would run out of battery after a bit, would give a bit of a warning for local marrines allowing for preperation.
Smoke Shell (Maximum Capacity 2 or 1) Could be a very effective way of gaining ground when aliens have an area copmletely locked down. Alien Vision cannot penetrate it giveing marrines that much needed cover and hunt the usual hunters.
Flare (Maximum Capacity 2) Does what it says on the tin. Would give marrines a bit more of a fighting chance in blackout rooms would have a medium lighting area but is ceratinly better than complete darkness.
Mini Cam (Maximum Capacity 1) Would be fired from the launcher and with a toggle button the marrine would be able to go full screen and look around on the cam from a fixed point and perhaps fix the point of it and it would appear as a small screen at the bottom/top right/left hand side of screen as a little screen seeing through the cam (able to toggle on and off). Could be very useful for scouting. Early warning and stopping marrines getting bitten in the ass. (think of the mini screen size in advanced warfighter where u could see through ur buddies eyes that sorta size screen). This would also run out of battery after a while perhaps 30 sec to a couple of min cant decide.
Decoy (Maximum Capacity 1) Would put up a holographic marrine for a few seconds and in the heat of battle could certainly confuse a skulk just enough to give the marrine the upper hand. Hologram would appear distorted in Fade blink view (maybe alien view but personally i dont want to encorage its use too much as theres not much of a trade off with it atm but hey ho its getting fixed.)
These are only things I can think of for types of ammunition which could all be used as a vital support role Im sure people can think of many others.
I dont think there would be a need for a very large trade off of useing it as they are support weapons and in effect a mini upgrade just as aliens get carapace/celerity...etc perhaps oen trade off is its heavier so takes 20% extra time to draw weapon...etc to be discussed.
edit: Corrected topic title from Oppertunity to Opportunity, sorry, could not resist. -Zaggy