WiFi: PER based adaptive AMSDU aggregation worth the effort?

This has been a lingering question. A lot of studies (including one of ours) in the past has delved into the support for AMSDU aggregation - and the ability to consider PER as a factor for adaptively controlling AMSDU aggregation. But is it worth the computational effort? Can this be simplified by making AMSDU aggregation static and using other mechanisms for limiting PER?