Consecrated Worlds: 5
Executive Vigor: 19
Imperial Prerogative: 12
Interstellar Dominion: 20
Mastery of Nature: 11
One Vision: 12 (-2)
Shared Destiny: 12
Technological Ascendancy: 21
Transcendent Learning: 16 (+1)
Voidborne: 18
Grasp the Void: 16
Eternal Vigilance: 13
Galactic Force Projection: 16
Machine Worlds: 15
Master Builders: 13
World Shaper: 17
Colossus Project: 16
Defender of the Galaxy: 14
Galactic Contender: 15
Galactic Wonders: 14
Biological Acension (Engineered Evolution+Evolutionary Mastery): 15
Synthetic Ascension (The Flesh is Weak+Synthetic Evolution): 16
Psionic Ascension (Mind over Matter+Transcendence): 20
Hmm, things aren't going exactly as I would have predicted with this contest, though the eliminations are no real surprise at this point.
Transcendent Learning is surprisingly useful, considering how many bonuses a high level leader imparts. If you stack this perk with a long lived species, a fast learner species, or a machine race, then you'll be able to reap those high level benefits more consistently. The +2 leader capacity is nice in the mid-game and late-game too, since you'll likely have many governors, admirals and a general or too, especially if you're going wide.
One Vision is kind of pointless, honestly. Increasing unity production is only useful for unlocking more traditions, and thus more perks. Which you've just squandered one of the precious few you have to take this one. Dumb. Plus, ethics attraction isn't that big of a bonus. It makes managing your factions a bit easier, but that's all. It just makes this perk even less useful when playing a gestalt.