Basically each mission will start with a briefing of your objective, then you are allow to customize your loadout based on what you think is important to bring along, according to the limited information.
The game will then play like a normal tactical rpg, in which you can move your unit, use item, and shoot enemies. In each mission, you'll have a main objective, and smaller side objective that can be completed if you have the right tool, like rescuing hostages, opening safes, capturing enemies, etc.
The main meat of the game will be replaying these mission over and over again, to learn the enemy pattern, location and behaviour, item placement, what side objectives are there. Then you can change your loadout, to adapt to this new info, or test new strategies with the goal of getting a higher and higher score.
The scoring will be based on the amount of turn you clear the mission, the amount of side objective you completed, enemies you killed or pacify, your squad health, and amount of item you used.
I was wondering if this is a good idea, or is there anything else that can be added to make the game more fun or unique.