Will the seats help the acoustic issues?
I think they will absorb reflected sound better than the metal benches, so in a mostly empty arena, there should be less reflected sound and it PA announcements, interviews, etc should be clearer and easier to hear.
In a mostly empty arena, crowd noise should be a somewhat reduced.
As the size of crowds increase, it should have little or no impact.
I think the visual impact, especially when the dome is empty or when there are small crowds, will be really noticable.
Regarding the seats, I believe there are two classes of seats. One for outdoor facilities and one for indoors facilities. Seats for outdoor facilities need to be more heavy duty. They need to handle direct exposure to the sun, they need to hold up to extreme cold and direct prolonged exposure to ice and snow, etc.
I think these will be fine for our facility.
By the way, I believe they are the same seats used at Kenan Stadium, where UNC plays (except we are using a manly blue where they have that baby blue those people like to frolic in). Kenan is an outdoor stadium but is far enough south that they rarely have to contend with snow and ice.
These have arm rests. I don't believe they all do, as I don't remember having them in our the seats me and my group sat in to watch SU get decimated last fall there.
And this is what the seats look like at Hard Rock Stadium, where the University of Miami plays their home football games.
I think we chose wisely.