The problem with planet, or even major city sized maps, is that you run into matrix online syndrome, where there everything that isnt necessary to explore, like floors 2+ in buildings are kept almost completely empty just to keep loading times within an hour and have the game come out before then next century.
"Everyone that posts here is aware of the game, thanks though." ET
Chad Dumeer, Deus Ex: "When government surveillance and intimidation is called "freedom from terrorism" or "liberation from crime", freedom and liberty have become words without meanings."
"Es lebe die Freiheit!"(Freedom lives)