last time i talked with maynard, he said that hell hunter grenades are not to TOUCH the objective whatsoever.
that means on crackhouse, u cannot through any kind of those grenades onto the hostage room bcos theyd block the path towards them and hurt the hosties.
That being said, he said it's perfectly fine to through one of those nades at the bottom floor of the house or above it or even inside, AS LONG AS THE RANGE DOESNT TOUCH THE HOSTIES RADIUS AT ALL.
AND u are not allowed to spam them. one is fine at a random legit spot not included in the scenario above, 2+ is pushing it.
Wards cannot be used whatsoever on the house, but thats how i've been told to handle these matters.
also, rules for CS_crackhouse apply exactly the same to DE_crackhouse. hosties or no hosties. same rules + u have the bombsites to worry about.