Don’t use current AV as a distraction. I was not talking about Shadowlands AV. The version we have currently is terrible. It’s why I am trying hard to get it changed.
The rest of your post agrees with what I said. 2 towers was possible if you had enough players with full corruption and strong gear. I don’t think Blizzard anticipated the impact of corruptions on any mode of content.
I also did not claim general+1 games “are very rare” - I said they were very rare. Which is true. When Epics were first introduced and they included creature scaling, the NPCs were very powerful and games would go on for 30m+. That didn’t change until the tail end of patch 8.2, when people had their m15 broken pieces introduced that patch (like the motorbike trinket).
There were a few occasions where the scaling fell behind and there was a small increase in +1 games, but they were fairly quick to respond to this feedback.
April 2019. Patch 8.2 was released 2 months later.