DY
Ive heard I forget from whom, (Ive heard it on a few occasions)the line between MO vs charedi being primarily over 3 things:
1) Zionism
2) Secular education (outside of parnasa)
3) Daas Torah
A fourth which is probaly less than the the first three, but is probably evolving
4) Role of women
To me this seems like a good line though obviously not absolute.