Hi,
I voiced my opinion in discord, but would like to repeat and elaborate more here.
I am in favor matches between 1st place in B1 vs 2nd place in B2 and vice versa. For these matches, I feel we need to take into account the performance during the season, but I am not sure how. Every solution makes some assumption. For me, the players being more or less evenly distributed between two divisions is the safest assumption, though surely this will be wrong in some seasons.
I think this eliminates some chance factor in promoting from B to A. Sometimes the player who just got demoted from A is particularly strong and I'd consider the players ending up in their division particularly unlucky. This would balance things a little in situations like that. Of course if that person ends up second in their division, then if makes the winner of the other division particularly unlucky.
As a secondary reason, I think it would be cool to have more commentated games, especially if they are arranged to be viewed easily in a large number of timezones (I am at UTC+3 and miss a lot of matches I'd like to watch). This is becoming less important for me since a number of good players commentate on high level games and publish on YouTube nowadays (and also I am busy with other things in my life). The players themselves publishing is not the same thing since I find the spectator chat both entertaining and educative.
Finally I am against having top two finishers from a single division to play a match to promote. This is an additional burden for many and I do not see much of an upside. This is Dominion, sometimes you will be unlucky; if you want a second chance, play next season as well
On a more serious note, I think this falls firmly into "if it ain't broke, don't fix it" category.
If such a change, in any form, is to be implemented, I believe we need more community input.
cheers,
--therem