Fate and I (well, not Fate as much anymore) play on another site where a sample 16 player mafia list could be:
TOWN
Cop
Doc
Vigilante (1 shot)
Tracker or Prostitute (knows if the player got up)
Bulletproof or Bodyguard
Jack of all Trades (usually with a scan, a RB/Prot, and something else)
Miller
Vanilla
Vanilla
Vanilla
Vanilla
Vanilla
SCUM
Strongman (one time unblockable/unprotectable if they send the night kill) or Janitor (1 use)
Roleblocker
Role Cop (or Flavor Cop if themed)
Goon
As you can see, chock full of power for both sides. Usually the games aren't that small, and they press over 20 players most times.
Here is an example of a large themed game that happened a while ago...*
TOWN
Cop
Doc
Princess
Vigilante (2 shot)
Hider (dies if hides behind scum)
Jack of all Trades (various abilties)
Death Miller Jack of all Trades (various abilities)
Mason
Mason
Vanilla
Vanilla
Vanilla
Vanilla
Vanilla
SCUM
Jack of all Trades (with various abilities)
Roleblocker (with a single use Poison)
Flavor Scanner (identify a player based on theme)
Bulletproof
Vanilla
Vanilla
*Town won this game by a landslide, mislynching only twice
These are commonly the games I play the most. Granted, these games also have shorter deadlines (48 hour days, 24 hour nights).
So when I see 3 scanning roles in 16 players, and scum doesn't even have a roleblocker to assist them, and a roleblocker with double ability to stop night kills, and 4 goons with a kill restriction, my first reaction was that the game was imbalanced. As I said though, I won, so I really shouldn't complain.