They dont have to go all out.
As Lemon has stated correctly, you have to think your way around, he even gave some examples.
You just have to outsmart your enemy.

A 3000m radius only protects the outpost itself, not the mining grounds, which is in my opinion the reason for walls in the first place. Just to give us enough time to switch from indy bot to combat mode (if its worth it and not a suicide mission) => no easy targets anymore.

It is difficult to speculate about terraforming right now, but yes I agree, once the terraforming is available the walls will have a different meaning/importance, but as off now the change does not make any sense.
You could ultimately postpone the change if you like to do so nonetheless.

To some people it seems like it takes no effort to think about defensive strategies, placing and maintaining walls/probes etc. You really have no idea what i takes to do so, especially economicly.
And its also wrong to assume 'Alsbale' does not want PvP. We do want to pvp, just not in our non-aggression indy bots -.-
Lupus might now say: 'yes, we were on alsbale but you were hiding in your outpost' or something like that.
my answer to this will be: 'we dont want to fight on a ratio with 2:1 or even 3:1 bots against us.
To me its sound like all youre saying is. I want easy kills and lots of em.
YOU sir, are the one not making any efforts.

+1 to NOT changing walls

FYI: There are no bugs only "features"