The icon for "hospital" is needlessly religious. It would be more appropriate to use a religiously neutral and widely recognised symbol: the Star of Life. Unfortunately that is (a) copyright and (b) too complicated for an icon. So I want to propose a close analogue: <big>✱</big> (U+2731 ✱ HEAVY ASTERISK).
To understand how the current icon looks from non-Christian perspective, see the Red Cross and Red Crescent symbols.
What needs to happen for this proposal to be adopted?