Hello, Bastion has been here and waiting for acknowledgement for even longer than Sombra. I am of the belief that Sombra does not NEED a buff and she is just fine how she is. A small buff or tweek, or many bugfixes would be nice really welcome.
On the other hand, Bastion has been at the back of the line in terms of receiving needed changes for over a year. All that really came from his most recent rework (Feb-Mar 2017) was that he became a fat Soldier with a nerfed ultimate. His turret form at the end of the day got nothing but nerfs with one insignificant buff. He the one who needs to be prioritized.