Fantasy TBS game has the adopted the following routine as the major game play: the more is better.
Usually, at turn0, you land grab as much as possible. Then keep expand and expanding. Getting more city, more cities and then even more cities under your control is the sure way to achieve your victory condition. More cities is always better. I want this changed for FE.
I want to have a game that a medium empire (or even a small more) has exactly same chance to achieve victory, by doing things right. A medium empire need not expand. Expansion should only be one of the means to win, but the only way to win.
Related to 5 way to play post, I want to see if we have some mechanism to make it that even if you have great chance to capture a huge city, you don't because there is game mechanism in play saying that if you capture it, you get further away from your victory. You don't even need any Civil tech in your game to win at all.
For example, if you play as a adventurer with lots of adventuring tech, your interest is not to capture more and more cities. You are interested in destroying as many as you can, then turn the ruins into monster lairs. More monsters at your disposal, the better. You become the Dungeon Keeper.
Or, if you play as a grand magician, you interest is accumulate magic power from the nature. A few well designed magic towers are all you need to cast the Spell of Mastery asap.
For military leader, you goal is not necessary to capture cities. It is to never lost a battle. Or maybe your victory condition is to kill 10,000 HP worth of monsters (or human, vice versa)
Fun play does not equate grabbing more land. It is how smart you play. How the game allows you to play smartly and differently.
I believe I've found the most versatile mechanism suitable for FE. Let me called it Ranking Bonus. It is very similar to your AD&D Fireball III spells, so the concept is easy to grasp.
I suggest/wish that FE will have this Ranked bonus implemented, sincerely. Below shows what this mechanism can positively done to the game (towards the direction I wish). Ranking Bonus should be implemented to almost every object of the game.

For this idea to work, it requires developer to work on it to become major feature. UI, balance etc has to be well considered.