A lot of Haibara hate in here huh.

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Well as crazy as this will sound, I believe Haibara has the least chance of being killed off if
anyone is killed. If you think about it there is no real reason to kill her other than to satisfy RanxShin fans. She's no longer the main priority of the BO like she once was so that just leaves three scenarios where the BO would kill her. One is to be randomly spotted by a member on her daily commute but Haibara rarely(I say rarely cause there was that
one anime original where she was at the mall by herself...weird) goes out by herself, so this is unlikely. The second would be if a member was deployed to surveillance the area to find information about her and succeeds in locating her, which is also unlikely.
The final scenario is her taking a bullet for Shinichi or Ran in the final confrontation but this has already been done before.
And not to mention Heiji and Conan have already been victims of the "I'm going to die but not really" bullet, so the story using the same trick again is also unlikely and evil if out of all the Main Characters to get shot, Haibara is the only one that dies.

Then there is the big reason that everyone and the pet cats see this ending coming, so I don't think Gosho would even use it. He will hopefully do something unsuspected like my
Mouri- Judo Samurai Master ending.