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Yes, prearranged draws are a scourge of group stage games; the decision to introduce mandatory time limits for games seems like the only solution because it's practically impossible to fight against them – if two players want to draw, they will. In chess, there were attempts to eliminate "grandmaster draws" with the 30-move rule, but even that didn't yield results.
Another option is to award 3 points for a win and 1 point for a draw, which would reduce the value of draws, as in football, for example.
P.S. By the way, Tribuna is open again, so to avoid cluttering this thread and making things even more difficult for the only judge, we can continue the discussion there.