This is probably the fastest mod I'll ever make, because it's so simple, and there's like no potential to make mistakes with object placement /etc/. Anyways to the point. In Fallout 3 it provided 10 damage resistance. In Fallout NV even 3 or 6 damage threshold (which is different) is a big deal. If I'm attempting to make this mod balanced, neither useless nor overpowered, what should I do? I want it to noticably toughen the character, without the perk on it's own causing a "I'm invincible!" feeling.

6-9 Damage threshold? 6-9 Damage resistance? 3 Damage threshold 3 damage resistance? Maybe 5 for both? Or should I just give damage threshold an extra 10? I could do 10 for both I suppose, but I'm worried about that balance wise.

There's no simple answer, I'm afriad.

DT, as you know, will automatically knock that many points off of whatever damage you take- if you have a DT of 10, and get hit by an attack that deals 20, you'll only recieve 10 points of damage.

DR knocks off a PERCENTAGE of damage recieved- if you have 10 DR, and get hit by an attack that deals 20, you'll recieve18 points of damage, since 2 is 10% of 20.

This is why DT was a (partially) broken concept in FO3- if you wore a leather vest, it would actually absorb MORE damage from a Fat Man than a Chinese Pistol!

What you need to decide is what is an approrpiate DT bonus for a character at the minimum level of when they can take the perk. You probably shouldn't mix DT and DR, however, unless the game or the DLCs already do that...

I think I'll go with 3, because I think that will stack with other various bonuses in the most balanced way to a total of 10%. Plus it would match the DT as toughness, like it matched the DR of toughness in FO3.