Why not just have it there without defenders, you are going to take it anyways. I am thinking about people who are new to the game. Unless you knew this.. then well.
scouts should not shoot. It seems ridiculous having to spam anti air everywhere.
You want the game to be fair where you can buid differently each time.
As it stands, the other person can spam air/scouts and there is nothing you can do about it. your smarties are not good enough.
new people will get frustrated, and to be honest at the moment it is a spam fight.
Someone can just spam t1 units and over run you. Lots of t1 will over take a bunch of t2.
So basically all you need to do is just keep spamming.
With substrate, you have to build a quantum generator first, which takes too long. Even when you do their first tier plane is not match in a air fight with phc.