I don't know, I kind of like the idea of a 'land loyalty' vs. a 'land score'. Maybe that's just because I'm tired of games where all that matters is increasing stats, increasing scores, and not other stuff. If the current system is kept, it should be called 'land score' but the system can be changed.
What are everyone's thoughts on dual-citizenship? Each land could have a list of lands that they permit their citizens to be citizens of. So, let's say Marind Bell has Loreroot on that list and Loreroot has Marind Bell on their list. A citizen of Marind Bell would be able to apply for Lorerootian citizenship. If accepted, they'd be citizens of both lands. If Marind Bell later removes Loreroot from the list, then the dual citizen has to renounce either their Marind Bell citizenship or their Loreroot citizenship.
With this system, I think that the land score from lands that someone isn't a citizen of shouldn't count at all, or should count less. However, it shouldn't be reduced. If I have 500 Loreroot land score, renounce my citizenship, and then become a citizen of Necrovion for 300 days, I should be able to apply to be a citizen of Loreroot and regain the benefits of my 500 days there.
How would land loyalty be gained for dual-citizens? The same as for regular citizens. They'd just be able to gain loyalty for multiple lands at once. Now before you cry foul and say that this is unfair to people who are only loyal to one land and one land only, it's not, or it shouldn't be. If a land like Golemus likes citizens who are only citizens of one land, then they can not allow dual citizenship or they can favor citizens who are only loyal to Golemus. However, if a land is in favor of dual-citizens, then of course dual citizens should be rewarded. Yes, some people might get bitter because of this system. What if Loreroot, Golemus, and Marind Bell allowed people to be citizens of all three lands but didn't allow their citizens to be citizens of other lands like Necrovion? A citizen of Necrovion might get frustrated that other citizens get access to lots of land tools and they only get access to a couple at best. That's why before this is implemented, there should be many more ways for land leaders to reward loyal citizens than their are now. That is, there should be more citizenship based (and non-citizenship based) features. Now yes, if there are four lands of equal wealth, and three of them unite in an alliance, of course citizens of the three lands will benefit more than the citizen of the fourth land.
On a separate note, I'd like to see another kind of loyalty implemented. There'd be a state/country loyalty score, and a land loyalty score. The state loyalty would count the number of days that you're a citizen in the land. Meanwhile, the land loyalty would be based off of citizenship independent factors. This somewhat ties into the rebel system, where someone can be loyal to a land, but not the government of the land.