Larva surge is limited by marines/xenos ratio

code/modules/cm_aliens/structures/special/pylon_core.dm

@@ -151,9 +151,14 @@
 		if(linked_hive.hijack_burrowed_surge && (last_surge_time + surge_cooldown) < world.time)
 			last_surge_time = world.time
 			linked_hive.stored_larva++
+			linked_hive.hijack_burrowed_left--
 			announce_dchat("The hive has gained another burrowed larva! Use the Join As Xeno verb to take it.", src)
 			if(surge_cooldown > 30 SECONDS) //mostly for sanity purposes
 				surge_cooldown = surge_cooldown - surge_incremental_reduction //ramps up over time
+			if(linked_hive.hijack_burrowed_left < 1)
+				linked_hive.hijack_burrowed_surge = FALSE
+				xeno_message(SPAN_XENOANNOUNCE("The hive's power wanes. You will no longer gain pooled larva over time."), 3, linked_hive.hivenumber)
+
 
 	// Hive core can repair itself over time
 	if(health < maxhealth && last_healed <= world.time)

code/modules/mob/living/carbon/xenomorph/xeno_defines.dm

@@ -285,6 +285,8 @@
 	var/larva_gestation_multiplier = 1
 	var/bonus_larva_spawn_chance = 1
 	var/hijack_burrowed_surge = FALSE //at hijack, start spawning lots of burrowed
+	/// how many burrowed is going to spawn during larva surge
+	var/hijack_burrowed_left = 0 
 
 	var/ignore_slots = FALSE
 	var/dynamic_evolution = TRUE
@@ -877,6 +879,8 @@
 
 /datum/hive_status/proc/abandon_on_hijack()
 	var/area/hijacked_dropship = get_area(living_xeno_queen)
+	var/shipside_humans_weighted_count = 0
+	var/xenos_count = 0
 	for(var/name_ref in hive_structures)
 		for(var/obj/effect/alien/resin/special/S in hive_structures[name_ref])
 			if(get_area(S) == hijacked_dropship)
@@ -885,6 +889,10 @@
 			qdel(S)
 	for(var/mob/living/carbon/xenomorph/xeno as anything in totalXenos)
 		if(get_area(xeno) != hijacked_dropship && xeno.loc && is_ground_level(xeno.loc.z))
+			if(isfacehugger(xeno))
+				to_chat(xeno, SPAN_XENOANNOUNCE("The Queen has left without you, you quickly find a hiding place to enter hibernation as you lose touch with the hive mind."))
+				qdel(xeno)
+				continue
 			if(xeno.hunter_data.hunted && !isqueen(xeno))
 				to_chat(xeno, SPAN_XENOANNOUNCE("The Queen has left without you, seperating you from her hive! You must defend yourself from the headhunter before you can enter hibernation..."))
 				xeno.set_hive_and_update(XENO_HIVE_FORSAKEN)
@@ -895,6 +903,9 @@
 					xeno.handle_stomach_contents()
 				qdel(xeno)
 			stored_larva++
+			continue
+		if(!isfacehugger(xeno))
+			xenos_count++
 	for(var/i in GLOB.alive_mob_list)
 		var/mob/living/potential_host = i
 		if(!(potential_host.status_flags & XENO_HOST))
@@ -907,7 +918,13 @@
 		for(var/obj/item/alien_embryo/embryo in potential_host)
 			embryo.hivenumber = XENO_HIVE_FORSAKEN
 		potential_host.update_med_icon()
+	for(var/mob/living/carbon/human/current_human as anything in GLOB.alive_human_list)
+		if((isspecieshuman(current_human) || isspeciessynth(current_human)) && current_human.job)
+			var/turf/turf = get_turf(current_human)
+			if(is_mainship_level(turf?.z))
+				shipside_humans_weighted_count += RoleAuthority.calculate_role_weight(current_human.job)
 	hijack_burrowed_surge = TRUE
+	hijack_burrowed_left = max(n_ceil(shipside_humans_weighted_count * 0.5) - xenos_count, 5)
 	hivecore_cooldown = FALSE
 	xeno_message(SPAN_XENOBOLDNOTICE("The weeds have recovered! A new hive core can be built!"),3,hivenumber)