GridStatusChainRule provides two custom indicators for Grid raid frames. The first indicator colors the frames based on which rank of Chain Heal (if any) will be 80% efficient or more on the target. This indicator is meant to cut down on overheal. The second indicator colors the frames based on how many Chain Heal jumps are possible from each target (from 0 to 2). This indicator is meant to prevent wasted Chain Heals on targets that won't jump.

The default setting for the first ("Targetting") indicator uses Green for Chain Heal (Rank 1), Yellow for Rank 4, and Red for Rank 5. The default setting for the second ("Density") indicator uses no color for less than 1 jump, yellow for 1 jump, and green for more than 1 jump.

GridStatusChainRule relies on information supplied by a helper addon (ChainRuleHelper) because of the way Blizzard handles position information in instances. Each member of the raid must have the addon installed to report who is within Chain Heal jump distance of them. Any player without the helper addon will have no ChainRule indicators applied to their raid frame. This is unfortunately the only way to supply this info. But, the helper addon is extremely lightweight and a one time download so as to be as small of a burden as possible. Ask your guildmates nicely to help you out =).

Updates in v1.2.0:

• The density status can now filter out players with full HP.
• Helper is unchanged.

Any comments on the addon's performance with a significant amount of users are appreciated.