I'm surprised so many people would change it to Dax dying too. The symbiont moving from host to host is the most interesting aspect about the trill who are otherwise just humans with dots, we have seen snippets of that happening but Terry Farrell leaving the show allowed the transition to a permanent new host to be explored so I would definitely keep Dax alive.
I also wouldn't have her die in Change of Heart, sure it made sense narratively but death doesn't always make sense, there isn't always a big sacrifice or a dramatic decision to be made, people just slip in the bath tub and break their neck sometimes so I have no problem with Dax getting a "wrong place, wrong time" death but I would change the details, Dukat force choking her was a bit cartoony.
I would give her a better reason to be at the temple, thanking the prophets didn't feel like it was in character for her, maybe let her repair something because she lost a bet with O'Brien (which would have the added benefit of torturing him some more because he blames himself), Dukat beams in, knocks her out with his fists and proceeds to the orb. There's no need for supernatural powers or even weapons, people tend to forget that punching people can be deadly and that could have been a reminder of that, there's too much of "Oh it was just a lead pipe to the head, they'll be fine in time for dinner" on tv.