Some settings in the game could use more fine-tuning. For instance, the tutorial tips. How do we know which are "critical" and not? I'd prefer if we had entire menus of settings so we could choose exactly what types of tutorial tips we would like. For instance, I want a warning when my backpack and bank are full so I don't miss out on any drops, but I don't need Zeke reminding me to spend my gold when I reach max because I earn it so easily nowadays.
Graphics settings could use more fine tuning too, or at least more detailed explanations of what they are. To this day I assume "smoothing" means something like FXAA, but I honestly still have no clue. Also, maybe adding more settings that could be used by beefier computers would be nice, like shaders or 120fps or something.
I personally love tweaking settings, so whatever the game could make customizable or allow for more fine-tuning would be great.