2) However, this is a pretty clear example of something I've been experiencing with my own game with a similar level party (4th). Fights with multiple lower level monsters are much tougher than expected. Two recent fights come to mind: 8 lizard men (2 with shield and greatclub and 2 with blowguns) and 2 crocodiles) and another with 6 giant spiders and one spell casting Aranea. Not a bad thing...just that what I would have expected to be a little tougher than an average fight (around 400xp each for four 4th level PCs) left the PCs with very few resources left after the fight - a lot fewer than I expected so I ended up changing things a bit to give the PCs a chance to have a long rest. So there probably needs to be an XP bonus associated with multiple monsters.
[MENTION=1932]Savage Wombat[/MENTION]: Don't forget, ghouls are stealthy creatures and prefer to attack from ambush. Keeping them at range isn't always possible and 3 surprise attacks that paralyze is nothing to sneeze at for low-level PCs.
Nor should it be, but that's still a huge nerf from 1E when they were entitled that many attacks per segment of surprise. Ghouls are nasty. Working as intended.
[MENTION=1932]Savage Wombat[/MENTION]: Don't forget, ghouls are stealthy creatures and prefer to attack from ambush. Keeping them at range isn't always possible and 3 surprise attacks that paralyze is nothing to sneeze at for low-level PCs.