Shire's top 5 Rome II wants :-
1. User-nameable Legions/Armies and units in the campaign game
2. No artificial device to stop the expansion of AI empires (distance to capital penalty in RTW for example)
3. Proper cut scenes for Agents actions and events just like in Shogun 2 and MIITW
4. Slower paced battles with the units having a proper weighty presence to them like in RTW
5. Unlimited recruitment of Elite units, the last few games only let you play the game how it wants you to play which goes against the ideology of the Total War games.