To @havok333, @Jules and @Rook who allude to this…
I have posted an idea that addresses the issue of some in the alliance wishing to opt out while others want to take part. Link below.
The problem with the current system is that you can’t actually choose to ‘opt out’ without being a burden on your alliance’s chances. If you ‘opt out’ and don’t set a defence, you are handing your opponents more points for each of your active members they take out. This will lead to frustration or annoyance by those who are taking part. If you do set a defence, you will still be under pressure from your members who want to compete to take part in the attack to contribute points.
My suggestion addresses this, and also addresses the obviously flawed matchmaking methodology to boot.