Thank you for taking the time to read my suggestion. Lets get to it.
TLDR: There should be the requirement of more materials needed to unlock tiers after the HUB, or some kind of resource sink. It seems sooo easy to unlock everything, there almost isn't a point of automation until Tier 5-6 and even then it seems relatively easy. I want my automation to mean something! If the factory isn't for unlocking tiers, then there needs to be something to pour my factory output into.
I will clarify that I mostly mean tiers 3-4 and henceforth. As Gusaboo pointed out on the discord, needed logistics upgrades, namely the splitter and merger, don't come until Tier 1-2 so it would be annoying to set up any kind of worth-while factory before then. However after this point, tier 3-4 should require more materials than it currently does, tier 5-6 should require a very high amount (say 15k-35k) of tier 3-4 materials PLUS the new ones, and so on, increasing the amount of materials needed exponentially each time and not getting rid of the previous tier of materials. This would give purpose to huge factories, exploration to get overclock upgrades and new fuel sources, advanced logistics networks, using the ports on the side of the space elevator, etc. Everything in the game would make sense to do and feel very organic.
As it stands right now, you can progress through tier 4 without a single factory building in less time than it would take to build the factory itself. Tier 5-6 seems like it would take some automation to complete, but nothing too big. Overclocking is nice I guess, a very cool feature, but when I see an overclock bug I'm just like "cool, I guess I'll pick that up" and then throw it in a chest. Power basically isn't an issue at all because the factories just aren't big enough to require anything big. Exploration seems forced and inorganic because I don't need to get any more resources than what is already around my base. Hell I don't even use all of that.
Anyways, this is of course only my personal opinion, and although I think I made some good points I know not everyone is going to agree with me so feel free to add your input. Thanks!