First of all enemy elders should be executed(is key in breaking the Foundation)
Bribing them is worthless they will backstab you in a second.
Second lets say you do kill these elders who's gonna stop there civilians/militia from fighting back against you?
Your suggestion brings no solution but more problems
The enemy the civilians the elders are one of the same you can't attack one without the other
The civilians should be seen as future enemy why should I or you care about
Man power when 1. They dont and 2. We're alone as it is?
Is better to kill your enemy when his unsuspecting then when his suspecting
Your solution will cause more problem. There is no way you can kill all of faraax garaad and half of Mahmud Garaad. We can only negotiate and we select a supreme elder.
But I think warlord is better.