Very succinctly:
1) No, there is no plan for that. Obviously. Why? Because:
a) Our politicians – including Charedim I will add – are interested in staying in power over anything else.
b) Having large families is considered to be a choice.
c) The government has a tendeny to kick issues not viewed as essential further along down the road to be dealt with at a later time.
2) Because “sharing the burden” is limited to the IDF, not maintaining a Jewish majority, democracy or anything else.
My questions for you are:
1) What you sort of recognition do you want the Charedi public to receive for making what is largely perceived to be a life choice. A medal? Blanket military exemptions? Eternal public funding? Free housing, electricity, etc.? The exclusive right to rule?
2) What’s your plan? Expel anyone who can’t produce a shtar yuchsin?