People wanted to have more bosses in Escape than just Wardens, Flocks(which are rather rare) and Stumps. So bringing some of the bigger enemies in seems like a natural progression to me.
That said… I do not find the Swarmak encounter to be much fun. You just end up hiding in a small room instead of properly trying to fight it and get behind it(besides someone as Kait using cloak to move behind the Swarmak) because of constant Juvie, Popper and Drone/Grenadier Elite spawns that make it practically impossible to go behind the Swarmak while it is also shooting players.
Having three weeks between Escape maps is far too long though. Even knowing they take time to make, I do not find a three week wait between different ones to be great when I mostly play them for a few days on the first week now.


