As fans, its probably best to sit back this season with very low expectations and just enjoy the game of baseball while watching our young players develop.
Also, the Polo Grounds method is also an option. http://www.ballparktour.com/Polo_Grounds_Dia.gif http://www.footballforum.com/photopost/data/2/medium/10-2-1951_polo_grounds_litho_above.jpg
Hypothetically, if the Cubs had to play in Soldier Field during the construction, here's an idea of what the dimensions would be: http://i.imgur.com/YQlxKl.jpg
Is it even possible to configure a baseball field within Solder Field? I just pulled out Google Earth and opened up a ruler tool. And no, it is not. Unless you are willing to settle for 190 foot foul lines.