For OTN they filmed the shows from Nimes and Rotterdam.
They had no PONO for these shows, and I am almost sure they had no IH either.
They had FTB, TILYTM and WICWTY, but these are of lesser importance IMHO.
So, what they could have released are the missing 4 main ones: SoS, TOL, TR and TYL.
TR is clearly better on Alchemy I think (the pedal steel is a show stopper)
For SoS opinons differ. If you like sax on it, you can buy the live aid dvds. Expensive just for one song, but a good substitute for the 92 versions.
For TWL Alchemy with Mel Collins is better.
As for TOL, this is the one where i feel that 92 versions were the best, i regret not having it, but even the Basel boot will not give it.
In short, now that we have both Alchemy and OTN on vid