Introduction of Haven in the Stronghold vs. Dungeon tournaments.

It wouldn't be bad if they made a subscription for 10 days for 168 rubles, like, you just log in.

It means not 10 calendar days, but 10 days when the lobby is actually used (let's say, when you are logged in).
Without looking at the amount and the number of days (there may be different options) - there is definitely a good idea in the thought itself.
If you get matched with a professional dodger in a tournament with a poorly designed group stage and an indifferent referee, you can play one game for 2-3-4 months, even though the actual number of game days was 2-3.

Those who have 2 disqualifications from OFB should simply not be registered. I myself have never been disqualified, even when I had 5 losses after 6 rounds.

I suggest that the discussion of OFB rules (outside the context of introducing OH) should finally be held in the OFB topic (if Sanin allows it at all).
Forcing people to continue playing in a tournament where there is no longer any point for these people - and in a more general sense - why create such a tournament scheme at all - this is a topic for a separate heated discussion.
A tournament is primarily a sporting event. In ordinary tournaments, the goal is to win the tournament. In OFB, the goal is to get to FB. Where does the idea come from to blame someone who has lost their chance to get to FB and is withdrawing - it's a big mystery. Opinions on this will be diametrically opposed, this discussion has been needed for several years, it is not directly related to the introduction of OH, and it will be completely out of place here.