In 1984 the CD medium was not well established yet.
The thing had to be released on a double LP, that is to say, it had to last less than 90 minutes. Impossible to release everything from a 2-hour concert. I think that their choice of songs to be removed was rather sound. ID and TBTP were the weakest of the set. PB was outstanding but very long jamming, they couldn't afford the luxury to put 14 minutes of that jamming on a LP, so they dropped it all together, but corrected this partially on the MFN compilation...
For OTN they packed the CD, fitting it to the last drop. Putting more would have required a double CD, and they couldn't do it for obscure contractual reasons, so they had to make a choice. Hence the removal of the major songs that had already been released on Alchemy (and arguably, Alchemy versions were better). They could have gone one step further and replace RAJ and PI with songs from OES, such as Fade to Black or When it comes to you, but I guess that for Mark, not putting RAJ was unthinkable 😂
So I'm not that mad with what they did in the past, but I'm mad at what they do today. They don't have any such constraints today, so the amateurish description and the butcher's job on Portobello Belle (and we will certainly discover more irritating stuff as time goes by) have no excuse whatsoever!