A tall, steep wall mid is not so bad in wind. I don't know about the 4 sided ones but users usually say they're good. I use the Shangri-La 3, which is 6 sided and that surely helps with the wind compared with the 4 sided ones. The Shangri-La 3 is quite good. With the standard pole, which is a bit heavy but very sturdy, it felt safe in quite serious winds. With trekking poles, it still made it.
The thing is a mid is quite aerodynamic because the wind is not so strong close to the ground, where the panels are bigger.
One interesting possibility (that I haven't tried myself) is using a mid that can be set up differently depending on conditions: low and wide for wind without snow, high and narrow if there's snow. This could be done by hiding at least one panel for the high & steep configuration. People here have done that with a Trailstar setting it as a 4 sided mid but I don't know if somebody has tried it in real world conditions.