I highly doubt that there is a full 80's show in the vault from a single night. Back then, they pre-determined a song or two during each night where they would change tapes in cameras. I doubt the Hammersmith footage is complete. Same with Donington 88. I'd say there is footage for most of those concerts, but there is a song or 2 missing. LAD and Maiden England were recorded over multiple nights for a reason. Brian May once explained how recordings of shows worked back then (I think he was speaking about Wembley 1986 shows). Production wanted to determine 2 songs during which they would change tapes each night. But Freddie refused to lose any songs, so that required a tight schedule and coordination to ensure that 1 or 2 cameras would change tapes during each song, but the others would be running. I highly doubt that Maiden went to that length, since it seems that they always recorded 2 nights for live releases.
Post 2008, they should have the video feed of at least 6 cameras for each show (2 in the pit, 2 at FOH, 1 at drums and 1 on the platform). Lately there is more, but I think that was basic setup for SBIT, TFF and ME. However, if they edit this footage like they did with Live Chapter, which was horrible, or the LOTB Icarus video, they should keep it in there. Most mid-sized YouTube editors would make a better job with those. Last properly recorded video was En Vivo AFAIK.
All that said, it will be interesting what they do with Paris this year. Not many indoor shows to use the footage from and Paris seems to be an one-shot recording. If they mix outdoor and indoor shows, the video will be a hot mess again.