Move the fence in, and create a "monument's park" for the Astros? It would be easily accessible via the bar ramps right there.
It's always about money so my guess is they're removing Tal's Hill to reconfigure the bullpens and create more seating areas or another similar to Crawford Boxes. Personally, two areas I wish they would address, 1) Raise the fence height from Center to Right field and 2) Fix the Zig-Zag columns in Left Center. My idea for #2, move the visitors bullpen, move the crawford box scoreboard over the current visitor bullpen area making it a flat wall, install tempered glass panels over the existing crawford scoreboard and make a new sitting/fan area field level crawford boxes behind the glass. those moves solves several problems with mmp which currently has the weirdest left field in all of baseball. in fact i'd go so far and say mmp left field is the weirdest stadium live play area in all of world sports.
Nah, Fenway is still worse.... but ultimately, I support the uniqueness of both. More seating in the left-centerfield area would lead to even cozier dimensions since you can't push back the structure supporting the roof. They could just provide field-level seating where the visitors bullpen is now (or make it a restraunt/bar)... and it would get the visiting players out of the "nuclear" bunker that they're currently stashed in now.
Behind the CF wall... after it is moved in to take away Tal's hill. Again, I'd keep everything where it is, and if they absolutely have to remove Tal's hill, turn that extra space into a monument park/Astros HOF, with cut-outs in the wall so people fans can still watch the action) (wall is high enough that it shouldn't distract the batters directly).
FWIW - Heard Tal's Hill is gone, replaced by bar atop batters eye a la US Cellular Field & Yankee Stadium. Makes sense since last few ballpark renovations at Coors Field & Progressive Field have done the same. Bit of a trend forming recently.
<blockquote class="twitter-tweet" lang="en"><p lang="en" dir="ltr">This won't happen next year. <a href="https://t.co/bZD4idRLYY">https://t.co/bZD4idRLYY</a></p>— Jose de Jesus Ortiz (@OrtizKicks) <a href="https://twitter.com/OrtizKicks/status/600509338269036545">May 19, 2015</a></blockquote> <script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>