On the contrary, make it mandatory with no exemptions. That way rich or poor, we all have skin in the game and suddenly people’s opinions on foreign policy directly impact their sons and daughters.
In my opinion any politician calling for war needs needs to at least have a family member fighting in real combat. If I find out they don't then I will happily vote against them, even if it means voting against my ideology.
That would not work because it would work only after the fact. You want to prevent this kind of things from happening BEFORE they are even elected.
What if it's a family member they don't like?
> Why don't the Presidents fight the war? > Why do they always send the poor?
It's easy to send someone else to die when they're just a number on a report.
You could explain why you are cynical about it happening, but just saying you are cynical about no exemptions is pretty boring.
You said "no exemptions".
Another, technically in a combat role, spent his tours in the radio room of navy destroyers banging out Morse code.
The problems you list are mostly surmountable.