they put a hard code check on a lot of the bonuses, lifespan +250yrs works above that it does nothing :/

Oh, that's sad to hear. I really don't know enough about all this to fix it I think. Maybe with time.

Err.. I looked in \Stellaris\common\traditions, they had a thing called AI_Weight, which I assume is setting the chance of the AI using it? I'm not exactly sure. A lot of things have changed and 00_Defines doesn't even work anymore so all my leaders are middle age and die around seventy two even with this mod.

I don't have the time to test this right now, so I'd like to get it right on the first go. If I have this as the mod text, where do I add what exactly?

trait_long_lived = {
cost = 0
opposites = { "trait_enduring" "trait_fleeting" "trait_venerable" }
modifier = {
leader_age = 1000
leader_influence_cost = 1.0
species_leader_exp_gain = -0.5

}
}

Thanks Kakushin, I'll look into that and see if I can fix it soon.

In order to stop AI from using the trait, you have to change its weight to 0. I think.

First Knight - No idea if this is achievement friendly. I have been playing with mods since I started playing the game, and have never actually gotten an achievement. No idea what affects that.

ChangoFeroz - I haven't had a chance to actually test this in game beyond making sure it can be picked in the species creator, but it SHOULD affect all hirable leader types such as scientists, governors, admirals, and so on. And yes, the AI can pick the trait as well. I'm not sure if there is a way to turn that off.

Sounds nice. Is it achievement friendly?

Can the ai choose this trait? Also does this effect the leader only or his command?