Looking at these pictures of the scoreboard and how "planted" or "permanent" it looks, it got me thinking that the future of the SEZ seems to most likely involve...
A) Leaving the new scoreboard as is.
B) Because of (A), leaving the back of the SEZ stands as is.
(C) Because of (C), all renovations to the SEZ stands would either go up (e.g., a balcony either side of the scoreboard), go forward (i.e., fill in the gap in front of the current Horseshoe) or do both ... but it will not go "back" toward the street at all.
I tried to get Chat GPT to enlarge the scoreboard to match the size of the new one, bring the SEZ stands down to field level and then add a small balcony on either side of the scoreboard with architecture that matched the rest of the stadium. It went a little wild and probably designed something too grand for the DIA's appetite for an SEZ renovation (for example, on the third edit it transported the scoreboard way up higher into the air, lol...), but I thought I would share anyway.
I think any version of this type of thing we might get would instead build around the scoreboard, so imagine both the balcony and the scoreboard lower and probably only additional seats on either side of the scoreboard.