I dont understand his logic that for a new expansion he needs to increase level cap and that takes time. You can still develop new content and keep level cap at level 12, if that is going to break the game engine.
The game engine has nothing to do with it. It’s a design problem, not an engine one.
Progression is an important part of RPGs. If you have a lot of content with no progression, that will turn off a lot of players who want and expect to see their characters being rewarded for completing challenges with new spells and abilities to try out.
