its good if theres proper, understandable buildup and doesnt take too long. 'Dating my Daughter' for example took way to long for them to fuck, despite her blowing him 3x a day.
Are you making one because you want to or because you think it will make money? Because if its for the second reason you'll burn out before turning profit and it will probably suck
I think scenes should be rewarded for beating an enemy, not losing to one. however, scenes from an attack (like shreading clothing and groping) are good