"Best of the Best" Tournament

My choice was to keep the "Diamond" template.
If you're going to play a tournament using templates with the title "best of the best,"
then you should have played all the templates without filtering, saying this one is bad and that one is good....
because
I doubt anyone would dispute the fact that
a truly strong player plays well with all templates,
and it would be very strange
if someone who couldn't win the tournament blamed it on the fact
that they had to play the "Diamond" template.

I can't argue with that. But... this is already a late round, the decisive games. Due to the aggressive nature of the template, a lot depends on luck: which hero you get, how quickly you break through to the castle, etc.
There's another alternative. There are currently more templates than rounds. I'm not sure why 8 rounds were chosen. But if there were 9, there would be nothing to discuss. Only, if such a thing is possible, I think it would be better to put the Diamond template earlier in the schedule.
And in this situation, a logical choice is made from the two least played templates. They were rarely played because of the Diamond's aggressive nature and the Shield's drawn-out gameplay.
Considering the weakening of the Guardian's protection in 3.1 and the veteran difficulty, the Labyrinth and Shield templates have largely lost their characteristic of being time-consuming games.