Our shul is debating whether to add an egalitarian minyan. I'm on the board — how do I navigate this without tearing the community apart?

Speaking from the traditional side: be honest that for many in your community this is not a matter of preference but of halacha, and a change to the tefillah is not theirs to give away by majority vote. If you frame a fundamental question as a customer-service decision, you will make the most committed members feel that the ground is shifting under them, and some will quietly leave.

That does not mean ignore the people asking — it means route the question properly. The shaila belongs to your rav, not to the board. The board's job is governance and shalom, not paskening. Let the halachic question be answered by halachic authority, and spend your own energy making sure no one feels unheard in the process.