Hi guys, here one more time to share some ideas.
I saw on travian Legends new alliance bonus:
- Recruitement: faster troops production bonus
- Philosophy: culture point production bonus
- Metallurgy: weapon&armor bonus
- Commerce: merchand capacity
It can be cool to see "team" bonus like this in kingdom. But with others mecanics ( use king and dukes for this because they have tributs, then, they have to give help on their governors with choose politics/economics/philosophic ways like irl life, people paid tax to have services.)
Actually the king got huge ressources, but he only use it for himself. ( in 75%)
It can be cool to evolve strategy in this way, king can choose a politics bonus to boost his kingdom, then it can open a lot of strategy.
Other idea:
Hero is very powerfull unit, but when he is lvl 100, he dont have more bonus.
I think it can be cool to add some bonus after lvl 100. (120 ? 150 ? idk )
I made a little list:
- Gauls hero lvl 100+: Units with hero win xx% movement speed when they support someone ( not only ourself or kingdom members)
- Gauls hero lvl 100+: druide can heal few units % in defensive repport
- Roman hero 100+: Disciplin give +10% weapon/armor
- Roman hero 100+: Roman way give movespeed bonus for infantery
- Teuton hero 100+: Barbar fear when siege attack village attacked produce less crop because he is under stress
- Teuton Hero 100+: Raid arent enough units on oasis production x2
there are random idea, but i think a lot of you will have more balance boost 
Other idea:
Robber hideout can be more funny, with prisoners.
- If Robbers are same tribe, attack them will make few prisoners, they will join the village like units from adventure.
- If Robbers are same tribe, attack them will make few prisoners, they will defends like animals.
