Makes things a little more clear-cut on being eligible for pAI

code/modules/mob/living/silicon/pai/recruit.dm

@@ -28,6 +28,9 @@ var/datum/paiController/paiController			// Global handler for pAI candidates
 		if("signup" in href_list)
 			var/mob/dead/observer/O = locate(href_list["signup"])
 			if(!O) return
+			if(!(O in respawnable_list))
+				to_chat(O, "You've given up your ability to respawn!")
+				return
 			if(!check_recruit(O)) return
 			recruitWindow(O)
 			return
@@ -361,6 +364,8 @@ var/datum/paiController/paiController			// Global handler for pAI candidates
 			return 0
 		if(O.has_enabled_antagHUD == 1 && config.antag_hud_restricted)
 			return 0
+		if(!(O in respawnable_list))
+			return 0
 		if(O.client)
 			return 1
 		return 0