Not sure if this was in the patch notes and I missed it, but Unstable Breed (explody rats) got a rework, and it’s so much better now! They do knockback when they explode but no longer do damage. This makes them actually doable, and I think it’s a really fun modifier. Letting them hit you for tactical re-positioning adds a new gameplay strategy. The frequency could maybe be tuned down a bit… but I’ll take it!
The campaign weekly is Unstable Breed + Teench Twins (splitting enemies). Got a group of randos together and we tried to beat it on Cataclysm… which was absolute insanity. We never beat it but we did get close a couple times. The bomb rats split into clan rats, so each group of bombers turns into a big horde on its own. That, plus usual Cata mayhem, was epic rat battles on a scale I haven’t played before.
TL;DR thanks for tweaking the bomb rats and making them more fun and actually do-able on higher difficulties.