Iune has no defensive ability, if you get close to her, she only has her 60 hp and CQC to rely on.
It's true that if someone gets close enough with a higher health pool, Iune should be at a disadvantage, but in my encounters with Iune it's the opposite. For example, I attempted to engage an Iune up close with Rak and his hatchet at forge level 8 (another gun that feels a bit overpowered) and got melted easily. Although, I will admit that the other player's positioning was definitely better in certain moments during that match.
For whatever reason, Iune last wish players may raise their gun at the same moment another player does, but will likely put out more damage faster based on what I've seen. From what I've heard from you guys, having the right cards would be critical to this being effective.
The only trouble with fighting Iune in melee is if they're higher level. When this happens, I get wrecked of course, but based on your recommendations of characters I will at least try using Harec and Doldren against her more and see if I can use stealth as an advantage.
Here's a proposal to MSE. Since headshots and mercy are her biggest strengths maybe Iune should get adjustments to her other cards so she can damage people more consistently with various builds, and be able use body shots reliably. Also, perhaps she could be rewarded a damage bonus for fighting at long range over short if not already.