Ugh this thread is still open too.
Anyway, I'm standing behind what I said before and the analyses will use and will always use Return as the standard. The reasoning behind this is because Shoddy had Return as the default option, and all the past gen analyses use Return instead of Frustration. It is also easier to use Return if using Wi-Fi.
The fact that Frustration is easier on PO is just an inconvenience for consistency. If ever a time comes that somebody wants to go through every analysis we have onsite and change every instance of Return to Frustration, then we will change our standard to Frustration. However, as it stands, we will continue to use Return for the reasons stated above. We may also part with PO in the future, we don't know, and if that were to happen, it may come to pass that Return will be the default option once again.