TBH I was also conflicted about this. I do enjoy the alpha tournaments. I normally take the A/B fray for the same reason. Recently I switched to A/B/P/R and I must admit that it is way more fun to have a couple more options.

Otherwise, it'll be just the same song & dance every brawl. Would be fun if there was a fray rotation. This season Fray 10 is going to be alpha only, next season it'll be ABPR, the season after that is is going to be A/B.

The way I see it... tournaments are for extra income, brawls are fun and bring a more competitive element to human players... well for now at least.