I honestly thought I would hate using a critical hit chart in FFG Star Wars. The way the weapon crit ratings worked made me think they'd never get used.
Boy was I ever wrong.
Our group loves it. It's exciting to roll the chart, and the narrative effects are fun and flavorful.
Also, the hit point mechanic in Genesys / FFG feels much different than D&D. It feels more like a Star Wars fight should. Death is possible, but it's radically more likely to end in surrender or retreat, or being "knocked out" of a fight via condition.
It feels like a tense race, where the PCs and opponents are using every trick up their sleeve for advantage before they're hung out to dry. In no way does it feel like a bag of hit points just being depleted.
I also love Ironsworn's momentum mechanic. It's a PC resource that builds over time, which you can activate any time the dice meet specific conditions to turn failure into success, or success into great success. Basically, your momentum rating has to be greater or equal to the level of threat rolled. When you burn it, it resets back to 2.