Mine Control Tower Managed Area Expanding

Dear Devs! Please remove the limit, or extend the possible area what mine tower can handle. Why we have to always relocate the managed area? It's enough to only manage mining designation. Thank You!

I think it should be a single rectangle or square centered on the mining tower. With a way in options to resize it, or maybe a research option.
It is very difficult with the overly strong perspective view to get the area to line up the way I want it. An orthographic view mode, maybe from the top looking straight down would help with this.
Also would like an option to click once for one corner and a second for the other corner instead of the click and drag 'marquee' thing.