I haven't researched "Tool Belt". If I had, it would be even worse (215 inventory slots). I use standard resolution settings and 100% UI size.
I would like to suggest four possible changes:
- Automatically reduce the inventory height if the 3 lower sections are empty (treat empty inventory slots as no inventory slots).
- Add a UI option to limit the inventory height.
- Reduce the base player inventory size to 75 (instead of 80), and increase the bonus from Tool Belt research to 15 (instead of 10) to compensate. This way, those who don't want to increase their inventory size only have 200 inventory slots, which fits without needing a scroll bar.
- Add an option to manually reduce the player's inventory size, somehow.