TL;DR
The maximum player movement speed is too slow.In the end-game, you will spend 80% of your time running between biter bases for expansion, and 20% actually factorio'ing.
What ?
The current maximum for move speed is Power Armor with 10 Legs in it (powered by pre-charged Batteries), while placing Refined Concrete (+150% move speed) in front of you.Although this is a lot when running around inside your base, it is no where near enough to be reasonably efficient in clearing out biter nests when you have a mega base.
The Tank is pathetic in terms of speed.
The Car is relatively fast but it doesn't even come close to the setup described above.
Why ?
In the end-game, you will spend 80% of your time running between biter bases for expansion, and 20% actually factorio'ing (from map view, because you're always clearing biter bases).Ideas ?
Let me put Legs in the car to make it go faster! >:|Or give us a bigger armor grid for more legs! >:|