The thing about consensual feminization that makes it work for me is when the consent is genuinely, messily explored, not just a checkbox. Take 'The Pet Project' by Andrea Dwork—wait, no, that's not right, someone else. I'm blanking on the author's name, but the one where the CEO makes a bet with his assistant. It starts as this humiliating power play, but the guy actually gets a say in the boundaries, and his gradual shift from resistant to curious to actively wanting the changes is what sells it. The consent evolves, which feels way more real than a flat 'yes' at the start.
A lot of older stuff in the genre just used magic or blackmail, which has its place for fantasy, but the newer wave where characters negotiate the terms? That's the good stuff. It turns the story from just a kink scenario into something about self-discovery and trust. I dropped a few books last year because the 'consent' felt like an afterthought, just a line to make the dubcon palatable, and it ruined the emotional payoff for me.