Saying the minibot is "worth too many points" is like saying "the drive train is worth too many points".
Sure the minibot is worth a lot, but the drivetrain is worth a lot more. You can play the game without a minibot, but just try it without a drivetrain.
If you keep in mind that your alliance has three teams, but only two towers, then you can see that not every robot is going to be able to deploy a minibot. So it is quite possible for a robot to make it all the way to Einstein and never deploy a minibot.
So if you don't want to build a minibot... don't. But I do recommend that you build a drivetrain.
After all this IS a drivetrain game.
Jason