CDG is set up with a half way house of this: There are 'big fingers' that support about 6 gates each and the security is at the point you leave the central rotunda for the big finger. The queues there are of folks that might be running with minutes to spare and those planning to use the shops biz lounges and open space at the end of the big finger. At least, that's how I remember it as I have avoided CDG for over ten years!
However, a rethink would be a nice idea. Unfortunately, it's not going to happen as we are going to continue to build on last year's model and try to accomodate each new politician inspired instruction. Each country and architect think they know best.