Which brings me onto something I might have put for both "good" and "bad" -- it's a really nice puzzle, but a bit too tough for its place in the sequence (only fifth out of the actual puzzle levels).
That's a good point. If I recall, this was the first level to stump me when I first played this game
DOS - Tricky 22 - Turn around young lemmings!Lemmings: 80
Save: 72 (90%)
Release rate: 88
Time: 5 minutes
Skills: 1 floater, 15 bombers, 20 builders, 1 basher
Good: The classic turnaround level. Plenty of ways to go about it, but you can't just block like you did last time
Bad: Probably too many lemmings for such a small level, and you get more bombers than you're allowed to use. (Unless you "use" them on exiting lemmings.)