There more I hear about it, the more I am convienced “Share the Burden” is not about the draft, but rather welfare burdens.
The Non-Charedim dont wont the Charedim in the Army, the army doesnt want them, they dont want to pay them the welfare benefits especially since many of them are struggling as well and can barely afford to support their own families.
By forcing the Chilonim to leave you will have a welfare state with no producers only takers. And the takers are already very poor and starvation is faily common. You cant have a Zebulin / Yissochar arrangement without Zebulin