Multiple bonds are only useful, if you have multiple creatures out.... Fire Queen for example has a lot of bonds out, but her healing can be reduced by a LOT with only 1 Rain of Fire/Firestorm.
Also 6 Shards of Gratitude heal you for 30/turn and cost a total of 12 random quantum, if I remember that correctly.
For bonds to be as effective you need at least 2 Bonds for 10
and 15 creatures, or 3 bonds for 15
and 10 creatures, or 4 bonds for 20
and 8 creatures, 5 bonds for 25
and 6 creatures or 6 bonds for 30
and 5 creatures. This using Feral bonds, using empathic bonds will be even MORE expensive, considering you have to get creaures out!
For example, you have to bonds, 10
, a graveyard, 3
and a firestorm, 5
and get those 15 skellies to match the healing power of 6 SoGs, you need a total of 18 quantum vs. 12 random (!!!!) for shards, which can be played after 1 nova.
After the nerf, I don't think, bonds need to weakend any further.
Quicksand is quite powerful, but can be prevented by protection pillars using enchant artefact/ protect artefact. Costs should be increased though.
Phase shield can be stolen / destroyed. They can't exist forever, they can only be chained. They are also the ONLY shield aether has. If costs are increased, Aether mono can be rushed way too easily, as they can't set up an early defence.
If nightfall/eclipse stack.....then have fund fighting Morte & Incarnate!