Herald - I wish

Hypothetically speaking, let's say ArenaNet decide to walk back the revenant bait and switch and rework the elites to strip or at least minimise cooldowns to bring them in line with the base legends. Here's how I'd fix Herald.

1) Keep the utility boon toggles as is, but clicking an active boon just turns it off and without triggering a cooldown.

2) Get rid of Facet of Nature. Replace it with 2 new F skills : one deactivates all boon toggles, the other is used to trigger the active abilities.

3) Instead of the active abilities having cooldowns, they would have energy costs and there would be combo effects. Specifically, if you want to use either the heal or elite active, no other boon can be running. The other 3 (utility) boons would individually trigger an ability, but if multiple boons are active, the F skill would trigger a different ability. Eg.

Individual

Facet of Light (regeneration boon) -- F activate -- Existing self heal (with cooldown - I'd prefer a weaker cooldown free self-heal but the whole game is built around long CD self-heals)Facet of Darkness (fury boon) -- F activate -- Existing de-stealth.Facet of Elements (swiftness boon) -- F activate -- Existing fiery breath.Facet of Strength (might boon) -- F activate -- Existing vulnerability debuff.Facet of Chaos (protection boon) -- F activate -- New maintain (like Embrace the Darkness / Impossible Odds) ability with energy upkeep. Something suitably chaotic. Maybe fling around random boons and conditions.

Combos

Darkness + Elements -- F activate -- New ability, possibly shadow themed to match the facets, eg. stealth, lifesteal etc.Elements + Strength -- F activate -- New ability, possibly boon related to match the facets. Maybe move the original + boon duration to here.Darkness + Strength -- F activate -- New ability, maybe condition removal.Darkness + Elements + Strength -- F activate -- Existing (graphically) dragon summon ability with HUGE energy cost. Possibly have it entirely drain you of energy and damage scales according to how much energy went into it.

Where's the Balance?

Cooldowns aren't necessary to achieve balance. In addition to energy there are other ways to prevent abilities from just being madly spammed.

Eg. if on demand condition removal needs to be toned down, a condition removal field which removes 1 condition every x seconds could achieve that.Eg. if on demand de-stealthing is a problem, make it immobilize the user, give it an activation time and make it interruptible. Stealthed players could run away to avoid the de-stealth or their allies could interrupt it.