Changes to cocoon spawn and Infestation nest:
Cocoons appear only outside of player's vision, just like currently. But now they only spawn instantly when on creep, outside creep they will grow over a minute, regenerating to full health. If killed before grown fully the zombies won't spawn. Spreads creep only when full grown.
Cocoons spawn in random places just like now, but on creep this happens a bit more frequently. Say they spawn 25% more often than currently after the change. Overall you should see them a little more, especially near nests. Like 75% of cocoons appear on creep, the rest attempts to expand. As they spread creep by themselves they can conquer areas over time when left unattended, even without nest the infection makes it's way on the station.
Infestation nest modifies the way cocoons spawn: now they can spawn on creep even in player's vision, but not instantly, over 30 seconds. They can't spawn close to players though. The frequency of spawn increases as well.
Makes infestation nest more dangerous, it's currently pretty underpowered compared to others. The change strengthens it's role of making the movement on station extremely dangerous without proper equipment.
(credit to Skeletkopf)