I'd never expected to agree completely with something you write, but here we are. Exactly my thoughts. My suggestion for germination would be, to have it reduce reju GCD, i.e. reintroduce swift rejuvenation.I don't see how they can nerf it without making it useless. The better approach is to add something to Germination that makes it an actual throughput increase like maybe making Rejuv be 18 secs instead of 15 secs with that talent on top of being able to have 2 per target.
Aren't all of those mechanics something unlikely in the WoD heal environment? Right now I'd fully expect (by blizzards description) to be able to spotheal either of those mechanics with HT, thus also regrowth, which you can turn free via MoC/OoC, and heals for more than a reju (with LS, rightly so because otherwise you'd really never bother to cast it)It may be difficult for that to beat 2-3 free spells every ~25 secs, but it's not impossible and Germination will also be significantly more flexible than Moment of Clarity. Right now, it seems like it'd be optimal for dealing with mechanics like Protector's Garrote, Dark Shaman's Toxic Mists, Nazgrim's Bonecracker/Snipers, and Paragon's Parasites/Fiery Edges.
Even if MoC just affected regrowth, the fact that regrowth has a higher HPET [and will have unless you want it removed from our bars in favor of reju entirely] leads to MoC being superior - unless you turn MoC into a bad iteration of OoC. The whole matter at hand is: If you have time for two rejuvenations to tick, you're likely to have enough time to wait for the next MoC proc to use 2x regrowth instead.Anytime you can tell where the raid damage is going to be focused it becomes immediately competitive -- and even without those mechanics there will always be tanks. Hell, just having 2 tanks taking damage simultaneously within range of you might be enough to consider it over Moment of Clarity.
You'd need to go as low as 40% to make that work out [at 5s duration, for lower duration see tiberrias argument]. Honestly, if the only way to not have a talent outperform the other options is to nerf it into being useless, either the underlying mechanic is broken by desin - or, as the two other options are discussed to be either restrictive or simply bad, you actually have two bad talents paired with a good one, and thus go ahead and just buff the bad options.Also, there's really endless room to tune Moment of Clarity if they're willing to adjust the mana reduction from 100% down to something as minor as 90%. I'm sure they'd like to avoid having to do that since it would likely make it feel more complicated psychologically and mechanically, but it's certainly a conceivable option.
Just to add one more thing as to why germination is bad [by looking at the considered to be bad and in line for buffs option Rampant Growth: If they buff it, it basically provides the same targeted troughput increase germination gives (via SotF) AND an additional troughput increase (via SM) at a to be determined efficiency (depends on what buff they choose to account for the heavy target restriction it has - e.g. a mana cost reduction to SM would outright destroy germination)