I think anticipation of penetration can be a lot of fun, as long as it's not overdone.
Instead of having the guy go straight to the lady's asshole with his pole, it would be nice to see him slap her ass-cheek with his dick. She would look over her shoulder and tell him to put it in.
Politically incorrect porn, where guys just go inside for the ride without any apparent consent or invite, might be fun to watch for a while. But when all porn is like this, then it gets tiresome.
I think it would be fun to watch something different for a change. Having the guys slap their dicks on the lady's ass-cheeks to get from her an invite for their ride is politically correct porn. Because these guys are basically asking the lady for her consent and wait for her invite, before they go inside for their anal ride.