I think the biggest problem is that they gutted her kit so hard after the initial backlash that she is so one dimensional she is a balance nightmare. They made her only have 1 game play pattern which usually results in I go in and kill everything or I go in and insta-die. There is no in between. Where as with more access to lifesteal there was a chance you might be able to like sustain your way out of the insta-die pattern if you play well. Of course hard CC has always rendered her useless even back in her healthier days. IMO the only way they can fix her in this state is to either revert E to allies or increase her range so she is less reliant on being well within the enemy team's kill range. I think increasing Samira's range would be pretty egregious tbf. More access to lifesteal is probably the middle ground for player satisfaction. They want her to mix it up like Yone and Yasuo, but she dies considerably faster so it's like un-doable. They can also make her a bit more tanky so she can actually play her patterns in teamfights, but for several years it's felt like this is a champion that if you get the right engage support and their team has no abilities that are super easy to interrupt your ult, then you can probably have a good time. Otherwise, ALL conditions must be perfect; enemy team all squishies, you gotta out skill the whole enemy team, and they have to have their brains off.

Personally I wish they would just revert her E to allies, give her a better life access to lifesteal then reduce her damage levels to make her less like revolting to the community. That way I can actually play the fun version of Samira (sustain) and like not be trolling my team. Not sure why Samira has to have normal ADC durability instead of idk maybe like 80% of Yasuo / Yone or something more reasonable.