Currently it's very boring because we can only build troops and then have to press a symbol to select which units we want. We could create T1/T2/T3 troops and unlock them on the Mainhall as building option. T1 troops have less healthy and do less damage while T3 troops have more health and are stronger. It would make the PVE and PVP more interesting. Each Faction would start with a different unit for example the North would start with Archers and the South would have Horses and so on.
We could build troops what we want and make the game more dynamic.
We could bring T4 units too as a neutral camp or make also T4 units to the strongest units in the game to produce. It would cost more Ressources but are the best one. It would be for example the "The elite Knights of the Starks" or
"The elite Knights of Lannister"