At least with me, you're preaching to the converted. Totally get what you're saying
Funny thing, the only time I saw Floor was in 2004. She was at Wacken with After Forever. I've always liked her voice but AF was not my cup of tea completely so I never saw her live, and when she finally joined Nightwish I missed her first tour 'cause they were always playing away from me. I watched too the videos and the official live releases but witnessing it all firsthand, at a show.... that's even better. She's mesmerizing and you can't take your eyes off her, and not because she's good looking too, but because of the whole show she puts on.
I've always liked Annette, her two albums with Nightwish (heck, Imaginareum is my favorite) and I enjoyed the two shows of her I've seen, but Floor is so good that she retroactively made me "dislike" that era of the band.... I mean, watch a good video with Floor and then go back to an Annette one, no disrespect to her but the difference is day and night.
Funny thing, when Annette was still in the band and Floor was considered just a temporary, pregnancy replacement for just some dates, Annette strongly opposed that, because she was a metal singer and she said that people would have loved her to the point that they'd have liked her to sing in her stead. Well, she was right on that, even a short run of Floor with Nightwish would have gotten people to wish she'd join the band, which happened anyway under different circumstances.