Well, I'm looking forward to many of the things that other members have mentioned here with MTW2 but I'm also looking towards how far and wide the Total War series can eventually go.

Imagine one day, perhaps a few more versions into the series, where you have a campaign that challenges you through and through... generals learn, adapt and utilize daring tactics against you, kings and emperors deceive, plot and form secret alliances against you, discontented citizens arm themselves or align with enemies to throw off your yoke, jealous rivals and family members meet in shadows with dark figures to eliminate you, enemy armies leave in their wake your lands scorched and burned as they march on your cities and your loyal armies marching into foreign lands carrying your banner and your will onto your enemies...

That is Total War...