i got one of the new style parachute helmets last month, after a similar accident to your OH. I ended up needing stitches around my mouth, so any additional protection is now appreciated!
I reckon that I’ll be wearing in autumn, winter and spring. Whilst the ventilation is impressive, i reckon it may be too much for some on a summer day. I’m really sweaty!
I would avoid anything with a removable chin bar, simply because the bar fitting is unlikely to be stiff.
It’s fine with glasses and goggles. It also comes with a surface to mount a camera, but I haven’t been using that.
I’d also recommend looking at the cause of the accident. Mine was due to poor tyre choice and going too fast on a new bike. Looking at the issue may help confidence grow back quicker