Blizzard has posted WoW Remix tuning for today which includes nerfing the health of Scenarios and Open World content, but unfortunately, there's no buff to Bronze or Thread acquisition.
The following adjustments are now live, and are intended to address concerns about the balance of low- and high-level players in various Remix content:
• The health of creatures in heroic scenarios has been decreased by 20% — 25%, based on the players’ levels. Higher level players will see enemies incur a larger decrease.
• The health and damage of creatures on the Timeless Isle, Isle of Giants, and Isle of Thunder has been reduced.
• Several spell gems (that were not down scaling up or down correctly based on player level) have been adjusted so that they provide a more-appropriate scaling effect.