As mentioned on our devstream the goal is to keep server performance stable but make maintenance more manageable by allowing supplies to be produced at the MPF/facilities, having auto repair on decayed structures, and giving more control over what is supplied with Maintenance Tunnels. The goal is not to make things harder for no reason. If it wasn't for the technical constraint we wouldn't even have decay or it'd at least be very different.
The team is keeping a very close eye on the system over the next week. We're concerned about both problems: Either it's too difficult to maintain structures or server performance starts degrading. It's a difficult trade-off in both directions and the system needs time to tune itself to the correct balance.