Let's be honest its hard to please everyone and people gonna bitch about either him taking too long to produce stuff or him rushing/shortening stuff.
The best advice I could give him right now would be to shorten intro parts. Rather than being 2 minutes of nothing with the girl walking or taking to herself or doing shit to spend time on unecessary movements other than taking the dick it should be 2 or 3 stills with short text on the side explaining the setup then the next part can be the ACTUAL start of the action.
This could give him more time to add 1 possibly 2 additional part on the project by reducing the "not so necessary intro that has a lot of animation".. I mean just on this first part of Black widow there's shit tons of animation between her jiggling, facial animations, LOT of hand movements, virtual overlay until the real thing start at 1min01...