I understand that there are 2 issues: influence on the country and economic matters.
On the first, I hope all flavors of religious Jews can come to a common platform. Maybe this requires some accommodation by increasing number of non-Haredim in positions of religious power. This will make the religious coalition stronger, not weaker, by bringing everyone, within halacha, into one bloc.
On the second, it is unsustainable to require unwilling Israeli public to continue paying tzedokah and not complain. When Begin proposed to pay fully for Charedi schools, Rav Schach instructed Charedi politicians not to accept anything beyond the previous partial arrangement. His argument was: at some point, a different government will not be willing to pay, and you will dismantle your own support system already. Not sure why R Schach’s position is rejected now, unless I am not aware that he changed it later on.