Hi! Thank you for your kind words!
(1) No, it is not possible. UI is 100% customizable, so there is no such a "element" in HUD called "run stats". It is just a bunch of custom made UI elements... But I think I have a good idea to make such a feature ^^
(2) I have "plans", but currently I have lots of work with HUD...
No, this is not a better UI. This is an UI for experts. Blizzard can't make such a confusing UI with insane amount of data, because then nobody would buy their game.