The Barbarian Village was added some time ago and was created with the intent that it be a Tutorial ground for new players learning the Combat System. As a reward for doing so, you can gain quite a bit of resources to jumpstart your Ikariam campaign. One can argue that its been a massive success for what it was intended to be since it has a built-in mechanism to prevent players from farming them to oblivion. Yet if you go to newer worlds, you'll come to find that your only opponents happen to be Barbarians. Why is this the case? Two factors: 1) Player Count and 2) Cultural Treaties
Player count is a massive factor here. On the world of Hera for example(83 days old), there are a whopping 244 accounts, of which 51 are inactive. Should they all ghost, that puts the world under 200 accounts and means even fewer pillage targets. Yet this leads me to my 2nd point: Cultural Treaties. Cultural Treaties are effectively a personal Peace Treaty between players and are the only way to fully utilize the Museum and maximize the benefit from being in a Democracy(might need to reform Governments too no?). With fewer and fewer players on a given world, signing CT's with those that are left largely prevents you from attacking one another(else your population riots for a few hours should you break it by attacking). So that leads to the inevitable conclusion: What pillage targets are left but Barbarians?
So my suggestion is to reform Barbarians such that they become a reliable source of income for players of all sizes on any given world. Such reforms are as follows:
1) Remove diminishing returns mechanism. Given that Barbarians are typically the only source of action/pillage income for active players on some worlds, it seems fitting that this has to go so that they're not penalized for being on sparsely populated worlds.
2) Reduce Building Material/Luxury Good stock levels of any given level by at least 50% to 75%. Level 49 Barbarians yield roughly 450k resources(not counting the Gold). Although you have to beat down quite a few Barbarian troops(and take some losses in the process), that resource haul is quite a bit. So much so that you have to send multiple sorties of Cargo Ships to loot it all. With Diminishing returns removed, the spoils would have to be reduced to compensate.
3) Increase rebuild time of a given level by a factor of 2 to 4. This is to slow down the process of leveling up a Barbarian Village.
4) Increase likelihood of reprisal. Yes, even Levels 1-9 should potentially have the threat of it, although I'd have the odds of reprisal start at level 5.
5) Make Barbarian Fleets more lucrative. Even though Barbarians are profitable on Land(in large part to not having any air units), they are simply not worth the time at Sea. That should be changed imo and its not like we can farm them as easily as Barbarians on Land since it requires a complete Sea Chart to pinpoint their location and an expensive Navy on hand to go after them.
Feel free to discuss.