TL;DR
Add the ability to upgrade every entity of a given type to another entity of the same type in one line in the upgrade planner (e.g. every belt becomes blue).What ?
Instead of thisbe able to do this
Why ?
The added value for the base game is admittedly limited since there is a limited number of entities with different tiers (only belts and assemblers if I remember correctly). The main selling points are :- QoL : less entries in the upgrade planner => fewer clicks => less time "wasted".
- Clarity : the intent of the planner is more apparent (in my opinion).
- Scalability with mods.