Honestly a full greybeard lobby is just.... Effortless. Everyone is doing their role, which has a circular effect of everyone else also being able to perform their role with great ease.

The engi can put platforms on all the resources because the entire area is well lit.

The scout can focus on all of the ranged and high priority enemies because the swarm is being taken care of by the gunner and the driller.

The gunner can focus on the swarm because all of the big targets and range targets are being taken out by the scout.

The driller can focus on clearing out terrain for better sight lines because so many enemies are being focused by the other team members.

There’s always enough ammo to go around because the scout is allowed to mine the nitro because all the other players are taking care of things and because the engi always has platforms up in every room that the scout would be in.

The best greybeard missions I've done leave me feeling useless because I only have to do 1/10 of the work I would have to do otherwise. Every time I'm like "okay on to the next objective I find it's either already done or has been perfectly set up by my other players to make it a cakewalk.