So if I remember correctly, blizzard stated that the removal of GBoM was only a temporary fix and they would try to polish the system further in a later patch after 7.2. Here's a spin on a way they could pull it off.
Why don't they give us multiple utility blessings. Players may only have one greater blessing at a time, each greater blessing can only be active on one person, can't be cast in combat. This opens up the chance to make numerous greater blessings for different situations and play styles and it would be up to your discreation to distribute them to those who need them most. Maybe they could be placed above our bars where our auras and seals used to be. Here's a few that I thought of.
Greater Blessing of...
Kings: Absorbs x dmg every 6 seconds. (Stronger than live)
Wisdom: Restores x% mana every 1 sec (Remove healing component and buff the mana regen)
Light: Increases healing received by 5% and restores 1% hp every second
Justice: Increases movement speed by 15%
Conviction: Reduces the CD of certain utility spells. Varies from class to class.
Retribution: Reflects x% of all dmg back to the attacker.
Resolve: Reduces the duration of loss of control effects by x%.
Law: Attacks have a small % to stun target for 1 sec. (Old seal of justice ftw)
Sacrifice: X% of all dmg is taken by the paladin instead. Suppressed when afflicted by CC.
The Battle Healer: X% of all damage is converted into heals towards the most injured party member.
Those are just a few I've come up with. Now obviously these are too many but it's fun to think which of these would make the cut and how you would distribute them in a group or which would you use in solo play depending on the situation.
Please feel free and share your own greater blessing ideas.