Glad you like it!
The roguelite systems will definitely be there for the final release; the only reason it's not in the game right now is because doing save files on webGL is pretty cursed. Narrative content is what we plan to do next! There'll be tons of lore coming with the Codex, and (very likely) a main storyline!
Having unique events based on follower composition is a really interesting idea I never thought of; it definitely has potential, and maybe it can also be based on those build defining followers like helhound.
Naming your first wanderer and making them a "hero" is actually my plan for the first faction! But it'll be a while before I can start to work on factions so we will have to wait...