change acolyte spawning mechanics for non-endless missions

[(PSN)FISSION-X-MAILED]

I mostly do Simaris synthesis daily target with SP for higher standing per scan.  And with every mission, I tend to wait for the acolyte to spawn since I'm already doing SP.  The problem here is the Acolyte mechanics dictates that I must do a non-stop killing for 5+ minutes to be able to summon the stupid donkey.  Most of the time, it's not a problem due to the increased spawn.  But there is an uncommon recurrence of a somewhat moronic issue... the enemies at the end(at around the time where the acolyte should be spawning) would stop spawning.

You have the Juggernaut and Kuva larvling spawning mechanics, cant that be used?  At 5min mark, cue the flashing screen?  Force spawn enough enemies to be killed?  We still have to wait 5 mins for that, so we can't abuse it with speed running the mission.  Your aim is for us is to waste our time, with this you still can while preventing us from wandering the map like idiots looking for enemies to kill.