@argothair I would typically agree with you about ideal game length, but as someone who’s gone to a decent number of IRL tournaments, you have to consider a few mitigating circumstances:
A: Most tournaments (excluding stuff like the invitational tournaments @Young-Grasshopper and @siredblood have run out of their own homes) happen at large-scale conventions, so A&A only has a certain amount of allocated time to even hold its tournament.
B: The sheer number of participants in the tournament demands that at least 3-4 rounds of preliminary games (if doing a swiss system) and/or another 2-3 rounds of playoff games need to be played over the course of the tournament. If you run a 8-9 round game in every round, you would need to have your tournament running for a fairly long amount of time, which leads me to my last point.
C : Player fatigue. While stamina is a skill that should be factored in for Face-to-Face play, there has to be some level of realistic expectations of how much time players can allocate to the game during the tournament. People need to take time off of work/school to even attend a tournament in the first place, so realistically this only gives you 2-5 days to actually hold your tournament when you factor in travel time. A 5-6 turn game takes about 4-5 hours to play out (including the time it takes to set up the board/cleanup), and a 8-9 round game would probably take about 7 and a half hours or so unless the game is a one-sided curbstomp. Having matches go on for that long simply becomes unfeasible in a face-to-face environment (unless we one day have the honor of living in a world where A&A becomes as revered as something like Chess, of course, and corporations are willing to throw hundreds of thousands of dollars at players to participate in large-scale tournaments).
EDIT: Grammar.