Nice, thanks for playing. I was considering at the back of my head to allow keeping adapted zooid selection through runs, we should maybe do this. That would make it less punishing to newer players as they don't know what they're missing out on.
Noted Swarmer minions becoming stuck - I'm glad you've considered minions as a viable playstyle here. It's something that we don't see often and we should cater to it.
Poison kind of stacks - damage increases max stack count and pierce multiplies "charge" count on poison. It's kind of complicated, but allows both damage and pierce stats differently affect poison. We should make it so that more stacks of poison dissipate more quickly, giving reason to keep it stacked up top. Maybe we should have a better way of displaying poison stack counts, but can't easily come up with anything.