I would agree with some above in saying rather than trying to "fix" minions by changing their rules (and thus just creating more bookkeeping for yourself)... just creat encounters that use lower level monsters, but just more of them. If you're level 3... instead of using a bunch of level 3 minions, use a handful of regular level 1 monsters.
You're still within enough levels that they will damage the party when they attack en masse, but they also have the hit point levels to actually sustain the fight for several rounds.
To me, minions are never meant to be used as an actual challenge, they are meant purely for flavor... for story purposes. For the times when the party is guarding the pass and has to stop the army's advance... and their bow and spell shots take out 2/3rds of the force as they advance up the hill before they then engage in hand-to-hand. Or when the swordfighter gets surrounded by a band of thugs and gets to show off his fighting prowess by taking them all on at once.
Use minions to make the party look cool... not to actually challenge their skills. Because that's not what I think they were originally designed for.
You're still within enough levels that they will damage the party when they attack en masse, but they also have the hit point levels to actually sustain the fight for several rounds.
To me, minions are never meant to be used as an actual challenge, they are meant purely for flavor... for story purposes. For the times when the party is guarding the pass and has to stop the army's advance... and their bow and spell shots take out 2/3rds of the force as they advance up the hill before they then engage in hand-to-hand. Or when the swordfighter gets surrounded by a band of thugs and gets to show off his fighting prowess by taking them all on at once.
Use minions to make the party look cool... not to actually challenge their skills. Because that's not what I think they were originally designed for.