Be careful using swarms - they will tear apart a party lacking area attacks. Makes a fun threat from both sides of the table, too.
Minions are fun, but FFS don't identify them as minions, ever. Let the players figure that out after hitting them. Minions will force them to adapt as well, which makes for a fun-if-harrowing experience for a group like thus the first time they're tactically split... And the second... Third...
The more mobile your monsters, the better this will be since the players are also playing very mobile characters. The battlefield will mix quite a bit and will sharpen their responses to threats.
Big solos will get boring fast. You'll see the same actions over and over and will teach the players how to fan out and stand more or less in place (the warlock will pace) and deliver the same attacks. That TW ranger and the avenger are going to get bruised more in a solo fight.
Minions are fun, but FFS don't identify them as minions, ever. Let the players figure that out after hitting them. Minions will force them to adapt as well, which makes for a fun-if-harrowing experience for a group like thus the first time they're tactically split... And the second... Third...
The more mobile your monsters, the better this will be since the players are also playing very mobile characters. The battlefield will mix quite a bit and will sharpen their responses to threats.
Big solos will get boring fast. You'll see the same actions over and over and will teach the players how to fan out and stand more or less in place (the warlock will pace) and deliver the same attacks. That TW ranger and the avenger are going to get bruised more in a solo fight.