TL;DR
Remove fast inserterWhat?
I propose removing fast inserter.Why?
The fast inserter is simply a strictly better version of the normal inserter. Once it’s unlocked, there is almost no reason to ever use the normal inserter again. I think the game would benefit from removing entities that are not fundamentally different from the previous tier.Now that quality exists, this kind of linear upgrade should be handled through quality rather than separate entities. Who actually uses normal inserters in their factory after unlocking fast inserters?
Inserters shouldn't even support a default “upgrade” behavior. Many inserter types are not equivalent and therefore should remain separate:
- Burner inserters can operate without electricity. Upgrading them to inserter could break setups that rely on inserters continuing to work during power outages or if you didn't setup electric pole.
- Electric inserters should probably stay limited to inserting a single item (no capacity bonuses), as No non-Bulk inserter bonus
- Bulk inserters should be the one with “I can grab more than one item” option. They are not equivalent to normal inserters. For example, if you use an inserter to insert robots into a roboport one at a time, upgrading it to bulk would suddenly insert multiple robots at once, changing behavior and potentially breaking designs. One would need to use override stack size option to simulate it (BTW "stack" ?!).
- Stack inserters add stacking behavior, which is also not equivalent. A stack inserter may wait indefinitely for more items to form a full stack, whereas a bulk inserter would not. Automatically upgrading to a stack inserter could easily deadlock or break parts of a factory.
The same is mostly true for assembling machines or modules, you may consider this idea of removing the tier of modules and assembling machines too (and maybe even stone and steel furnace, they are the same... wood and steel electric pole... wooden chest iron chest steel chest...). With quality, having 3 tier of such thing is just annoying, specially because you need previous tier to craft the next tier and it's make quality setup a chore (with quality, no recipe should have previous tier that so annoying and with quality there is no need for item tier anymore, maybe it's time to fully accept quality into the core game, obsolete item can be just recycled now)



