Personally think 3x is a bit much.. But the concept of this is a great idea! Maybe 2x would be great like call them Evolution Servers or something along them lines.. I will defo be trying them out I am glad you are testing something like this! I really do think its a good idea..
About the pillaring though, I have mixed feelings about this at one point i'm like yay! they now can't pillar large numbers of places and sell them off... Or people cant block us in from building anymore! But then I'm like, people can build right next door to us and when we are half way through a building we cant finish it off because someone has half built their building and a war breaks out because no one wants to move. You stop the ignorance of certain people, but it hurts the genuine people.
I think spawn points should be blocked from building on... So many times I have re-spawned and been stuck in buildings ! Not been able to get out..
This will effect the spawns for resources and animals unless you have turned it off where no one can build at main resources.. Or your reports will have to include any main resources blocked will need to move, which makes 10x more work for you guys..
As much as I would loooove for you to take away the pillaring situation, I think it will effect us more than them