honestly , if you want convice someone about something you need give a logical solutionhow to do something. in cod you have to escort hover which ride on fixed path - it can't change course of ride. but even this create a lot bugs. Even better for acti - cod have static maps.
so in 7dtd can't be make "routine" because map in generated radomly and players can infuenlce on it. so it will be hell for them.
"do the job" em XD? you know there is a lot ot types in game studio? programers, guys who make characters models, props etc. sometimes even 1 character model need 2 week to be one. so "do the job" is not so easy. this something like you want from vocantional school teacher to make space rocket. You know even something diagonal jump was something impossible for long time in games?
Your idea can be implemented but it need changes. i will give you how could it work in way possible for TFP to considered.
You take quest.
go to marker - it will make drone respawns ( drones are flying + there is drone model created ). it will create "zone " similiar to treasue hunt hint were is treasure. you must stay in this zone when drone moves. it moves only if player is inside. zombie is respawning and going to attack you when you get into trader's gate drone will disappairing and you have complited quest?
@meganoth do you agrea this idea is more realistic that his idea?