Except previously you said...
So which is it? You need to be zoomed in as a healer to do your job (but why?), or you want to zoom out but can't (except somehow it's okay as a ranged DPS)?
Either you're trolling, or you're genuinely so caught up in a solution to your (relatively-unique) problem that you aren't understanding the consequences of your idea for other people. It would affect others in a negative way, and take away their control over how their character is displayed to you, and give that control to you instead. You do not get to decide whether they should be okay with that. It affects them, even if you don't think it affects them, and saying "too bad, this request is about what I want" doesn't make it more valid. It just makes you sound selfish.
And again, it wouldn't even solve your problem, because they could be wearing something just as bad underneath. Remember that the "speedos" you dread are valid leveling gear throughout ARR, culminating in the horror that is the leopard-print subligar, and then return with Shisui's kohakama. There will be no escape.