What I'm thinking isn't so simple as merely encountering lower leveled enemies.

I'm thinking a bunch of enemies of the SAME level but with significantly less health (like 2-3 hits) that swarm. There's actually a precedent for this in Azys Lla. I think it's possibly in the Aetherochemical Research Facility. A lot of little spider machines pop off the conveyor belt and swarm the party. I'm asking for more moments like that.

AND

If enemies with that miniscule amount of health had a gambit to run away as players approached, maintaining a distance of say 10 yalms, but they did significant damage, then we'd have a tactical reason to intercept them.