If you could make changes to Shields in Rs3 to make them more viable to camp, what would they be?

As an avid fan of sword and board style of combat, it's a shame to me that shields aren't very viable or efficient in most PVM content nowadays outside of team-focused content ( tanks ). Pretty much the only reason to use shields outside of tank roles is as a switch for certain abilities.

Now, the basic idea for this is pretty reasonable: shields take up your off-hand slot which could be arguably put to better use for extra DPS via dual wielding or two-handing, in exchange for extra durability and access to defensive abilities. The problem with this, of course, is that exchanging DPS for survivability is almost never a good idea, as killing the boss/monster 50% faster on average means you take 50% less damage on average, AND you get faster kill times.

So what would you think could be a good idea to make shields more viable as an alternative in PVM scenarios?

Personally, I would take the deflect ability from Defenders and give it to shields instead, focusing defenders more on their ability to do both damage and adding defense. Give shields, say, a passive 10% chance to completely deflect an attack that would otherwise hit. This would double down on the defensive niche of shields, especially when used in pvm scenarios you may be underlevelled for; as the deflection would only effect attacks that would otherwise hit despite your defense rating.

On top of that, and I won't lie that this is somewhat inspired by elden ring, but I would also give shields a "counter attack" ability; where the next ability used after a passive or active deflection ( such as the deflect ability, resonance, etc ) does increased damage. Either make it a 100% crit chance, or just a flat 150%-200% extra damage. This would further enforce the niche of shields used against stronger monsters/bosses, as this effect would kick in more often against something that is actually hitting you.

Defenders, of course, would need to be rebalanced around this, but I think this would help a lot in making shields a lot more viable as that "new at PVM/a particular boss" type of item.

What do you think? What would you like to see, personally, in shields that would make them more worth camping?