Pollution Revamp

Keep but adjust values
Pretty straight forward. We keep the current technical solution but adjust producer amounts and the levels where effects occur.

Make it something primarily cosmetic
Remove gameplay impact and change it so that pollution has mostly graphical effects. ''I think it should be a soft mechanic which links your actions with the area around you, in mostly a visual way. As a form of immersion and to make the game a bit more believable.''

''I think that this should NOT come with big downsides. It should be "oh that's neat", not "oh no"''

I also think pollution shouldn't be on things you are forced to use, so it is tied more to your choices than simply your progression.

So someone could say "ooh I bet this person uses steam power, you can see the [effects of] pollution from it"

Change the effects to be less annoying and use it as an incentive to use certain progression paths
My own take is that pollution should be used as a gameplay mechanic to offer the player the choice of easy paths or cleaner paths, where the cleaner path would probably be more expensive or less powerful, but come with the advantage of higher efficiency of passive/renewable energy and resource generation, such as bees, crops, plants.

Use pollution to incentivize more TPS friendly building strategies
There's been some talk about trying to use pollution as a mechanic that steers people into more TPS friendly builds, or at least away from unfriendly builds.

Have pollution effect machine efficiency or increase maintenance needs
It has been suggested that pollution could affect machine efficiency and/or maintenance needs for multiblocks.

Have pollution spawn/attract mobs attacking pollution producers ala Factorio
A number of people have called for a Factorio like mechanic where pollution increases the danger from mobs.