One key challenge will be both a) being nonpartisan, and also b) appearing nonpartisan. If you’re not actually aiming for (a), then for honesty’s sake you should not aim for (b) either. But if you are actually aiming for (a) as you claim, then I would avoid including “stopping Donald Trump” in your stated goals as that hurts your (b). I know from personal experience that there are at least some people who’d support a nonpartisan version of your effort but also voted for Trump as (what they saw as) the lesser of two lizards; there is no reason to alienate those people like this.
One key challenge will be both a) being nonpartisan, and also b) appearing nonpartisan. If you’re not actually aiming for (a), then for honesty’s sake you should not aim for (b) either. But if you are actually aiming for (a) as you claim, then I would avoid including “stopping Donald Trump” in your stated goals as that hurts your (b). I know from personal experience that there are at least some people who’d support a nonpartisan version of your effort but also voted for Trump as (what they saw as) the lesser of two lizards; there is no reason to alienate those people like this.