Funny, I have ended up with VIPER (sort of). Only, nearly all of the classes involved are Plain Old Objects, instead of having particular defined/inherited behaviour. It's quite nice. My view layer is gone, too, as I'm just kicking out JSON from my server (although I can wrap dumb views in front of the API if needed). This is web development, mind you.

Lately I've been trying to learn game engine development, from scratch in C++(!). It's... an experience, and aside from the amazing book Game Engine Architecture and a few others I have, I've come to really miss how well defined architecture is for web dev compared to game dev.