Remember all these talks about lack of intermediate content? When Crystal Towers and Expert roulettes were too easy and Ex primlas and Coils were impossible without a static for an average/casual player and there was nothing in between?
Alexander raid, especially turn 4, fills that gap. Not hard enough to have too many wipes and lose interest in raiding, yet not too easy to 1-shot it with every DF group.
I hope new 24 man content will be better tuned as well and will be not as easy and boring as old Towers.