Well, in any case, we won't tie upgrades to forts anymore; they will be fixed, right? The only question is, if the increase is the same as from the base, then the upgrade gives too few bonuses, because, unlike the base, it doesn't provide a weekly increase.
Currently, there is an opinion that the system of increases and bonuses is too complex.
1. When building a basic dwelling of tier 1-6, 50% of the increase is immediately applied (tier 7, 100%).
2. When building an upgrade, another 50% of the increase is immediately applied.
3. When building fortifications, the increase from basic dwellings is increased by 50%, and the increase from upgrades is increased by 50% (fort: tiers 1-2, stronghold: tiers 1-4, castle: tiers 1-6).
As I understand it, militia (base 20) 50%: 10 base + 10 upgrade + 10 fort + 10 stronghold + 10 castle. Or how does it work in the first version? Can you show it with an example?