Zoom function (default)

Could you allow the user in settings to change the default Zoom settings... currently 40%, 80%, 160%... I use different settings, and I'm sure each user will want to too. I use 60%. So allowing users to set the default e.g. I would set it to 60%, then allow your x2 calc to take over from there? For me 60%, 120%, 240% works well. So allow user set default zoom.