I liked everything about the hardcore mode except anything red dot having no sight. Makes some guns entirely useless. They may have changed that since I last played HC though.
I understand the removing the helping things, and electronics, etc. But removing the dot from a red dot scope is like grinding off the iron sites on a standard issue. It gets worse when some of the guns come standard with red dot.
It actually wasn't a huge deal, but at the time I tried it my go-to medic gun just so happened to come standard issue with red dot.