disable pillar collisions altogether(or add an option to do so)

Pillars as they are now don't create a significant challenge, so on the rare occasion they do get placed in a manner that blocks a thoroughfare it becomes an inconvenience. Not a challenge, just something that interrupts flow and occasionally causes issues in the base as trucks are forced into longer routes by what should have been a non-blocking overpass.
Considering that for some players they don't add fun or challenge in a significant way it would be nice to see their collisions turned into an optional feature so players can focus on all the great features in the game instead of fiddling about with them.

Or maybe add Pillars as a separate Item to be placed. Don't automatically place any Pillars.