Another big difference will be the height of the mechitzah in shul. R. Moshe said that we can rely on a 10 tefachim mechitzah, but many chareidi rabbonim say it must be high enough so that you can’t see the ezras nashim.
Totally not. Many “Charaidi” shuls have balconies where the women can see the men (and vice versa, if the men look up). The Chassidim (a completely different issue) have a long standing Shittah (based on the Simchas Bais HaShoeivah) that there be no visual contact.
In the here and now, due to a “not Frum enough” complex, Frum non-Chassidim feel the need to be as Frum as the Chassidim (or feel inferior), they say you need the visual mechitza.
V’Harayah, the famous story at the the Agudah convention with the Chofetz Chaim, (who agreed to a visual mechitza due to the insistence of the Chassidim) which has been quoted here many times.