Good ideas all around.
If they keep it where it is, I hope they go with what CO did and make the entire area the scoreboard...
What they had is essentially what we have now:
But what they replaced it with is so cool and what we need too.
Keep the clock at the top, but make the silhouette underneath to fill the existing space and incorporate something Baltimore-centric (or not).
I think the proportions of Camden Yards are so pleasing, I wouldn't wall a massive wall to suddenly throw everything off, so updating the existing one to now use every inch of existing real estate with a screen seems like the best modernization that balances aesthetic with function.