The giveres plugin was intended to even out the difference between aliens and marines on bigger servers (marines have the advantage).
The potential of giveres is huge.
If giveres were to be used during a CW or on a server with more experienced players - it would be dreadful! Aliens would always win.
But that is not the case now, is it?
As it is now on the Alien breeder server the giveres plugin does NOT benefit aliens.
Why?
1. It supports reswhoring, by making it harder to detect, and easier to get away with. (reswhoring is one of the best ways to screw the entire round).
2. Aliens get a slower resflow. This is basically beacause of (1.), people does not use the res for RTs, or doesn't use it fast enough (running around as skulk etc)
Every second early on makes a HUGE difference in the end.
3. It reduces the gaming experience and quality of the server.
It gives new players, and not-so-experienced custom/siege map players, the wrong idea. Let everyone gorge and learn how to do the dirtywork

Build the RTs, where to put the DCwall, how to place your OCs to best stop a rampaging HA-rush etc.
In short - NS REQUIRES TEAMPLAY and the giveres plugin does not promote it.
Under other circumstances, maybe - But as it is now
I vote for a removal of the giveres plugin.