That's the industry you nostalgia push until something becomes the new nostalgia push basically Hank Pym and Wasp were core to Avengers until movies wipe that. You are more likely to get movie line up than original line up. We already had that move in the X-world Blue/Gold or animated series line became the default line up. The problem with X-men is that Blue/Gold has the original line up in it and it is easier to slip backwards. But as someone mention Wolverine and Storm are key now so the X-men will rarely slip back to just the O5.
Nah X-men Gold was more Excalibur thing with Storm, Colossus and Old Man Logan than ANAD imo.