Base on my reading so far, from TCG theory and other resources I have gathered.

Tunica is the primary focus of PE before focusing on smooth muscle?
Because your penis need enough space in order for smooth muscle to develop?

Also when you reach a plautus, focusing on tunica will give you a higher chance of breaking away from plautus?

Well this is my thoughts, for those who have reach a plautus before, is this the case?