Two cents without reading the whole conversation just based on personal experience:
Don’t understand the “after level 12 players get too powerful” point that Swen made. I’ve been at level 12 for a while, and my characters feel mid as fuck. I’d love bigger, harder combat encounters and more tools to go after them. It feels like the game is continuously building up and then… stops. Don’t get me wrong, it’s nice to stop at a certain level to feel the full breadth of what that level alone can accomplish, but after a while, I want to MOVE ON.
Swarms of mid level enemies backed by high level behemoths facing off against a high level party is exactly what I’d want after a whole game of working out the mechanics.