After seeing the Boss, there were many small monsters that needed to be cleared out. Of course, these were all different types of spiders.
The individual players targeted these spiders. This was the ultimate Instance Dungeon back in the 60s, so there would at least still be some valuable recipes and materials. If equipment dropped, then it would at least be Gold grade. For ordinary players, these were rather valuable items.
Even if nothing dropped, the gold dropped from these monsters was still a good source of income. Naxxramas' small monsters didn't drop copper coins; they immediately dropped silver coins.
Of course, these silver coins would still be distributed out to other teammates. Even if that was so, the income from grinding these monsters was still quite decent. The biggest obstacle was not dying and not using a lot of potions.
