Symmetrical gradient option

Hello,

I often find myself wanting to use gradients to fade out shapes, for example a ring that would have smooth borders like this :

But I can only fade one of the border and usually end up drawing two rings with opposite gradients instead.
I was wondering if having a symmetrical option for the gradients would be doable in order to fade both sides of the shape at the same time.

I already saw some posts about multi colors gradients and gradient scaling that would be awesome (especially the scaling) but they seemed more complicated to me. If that's not the case I can delete this post as it would be redundant with the other ones.

Thanks for the great asset,
Have a nice day.