I appreciate that they acknowledged the Brawl weighting system -- ignoring it would have been a real mistake -- and I'm satisfied with what they said about it.
I read some of the discussion about it on Reddit, and people were angry (because there are always angry Magic players on Reddit), but it seemed like most of the frustration was that the system isn't accurate enough, not that it exists.
Personally, I'm upset in the first place that Magic cards are so imbalanced that a weighting system is necessary, but given that they are, I'm glad such a system exists, at least for casual formats.
They talk about continuing to make changes to the system. The main change that I hope they'll make is to allow negative-weight decks to validate. Then I can take some of the useless utility lands out of my zero-weight Mycotyrant deck.