I would characterize my Premier seats as somewhat narrow and firm, but only slightly uncomfortable for me.
I installed a piece of high density foam under the drivers cushion. This has been described in another thread here. I'd now change my rating of the seat from acceptable to very good. A piece of foam costing only a few dollars and taking maybe 30 minutes to install. Anyone unhappy with the seat should certainly try this easy fix.
There is never going to be a recall for the seats. Recalls are for safety issues and seat comfort is just not applicable. GM may improve the seats in next year's model. Hopefully it won't take them as long as the 2 1/2 years it took Tesla to come up with improved seats.