Guild Wars 2

Revenant Blog post

Resistance Boon
“Conditions currently on you have no effect; stacks duration.”
Currently, we have skills that provide a similar effect, such as the warrior’s Berserker Stance (condition immunity with no counterplay). When placed on a character, this boon will temporarily relieve them of all the negative effects that conditions have on the character. For example, if a character is running in fear with the fear condition, they’ll stop running in fear when resistance is placed on them. When resistance ends, they’ll resume running in fear. Having this type of effect on a boon makes it so the boon can be removed by other players, adding in more counterplay.

Is this added in the tooltip “Berserker Stance”, as well as other “invulnerable” skills like Guardian’s Elite Focus. Or is it a completely new boon mechanic they decided to give out randomly?

As for the last quoted paragraph, are they forcing us to use Boon Stripping in our builds now? Of which mesmers are best at doing? If they expect us to counter this by changing our meta trait line, we’re going to have issues.
They’re seriously going to have to revamp our boon stripping if they expect that… for example, the Guardian’s Searing Flames: Removes 1 condition every 10s. Procs on burning.
I have to worry about whether or not this bad trait will actually strip 25 stacks of Might, or ignore it. Now they added another boon to make that even more difficult.

tl;dr
If they add the boon to skills like Berserker Stance or “invulnerable” type skills, it isn’t a big issue. If they pass out Resistance Boon like candy to provoke us into traiting boon stripping, they’d have to better our boon strip traits and mechanics. I shouldnt have to worry if Searing Flames will remove 23 stacks of Might, or Resistance Boon, or some crappy 3s Swiftness…