^

Good point.  Also I've been thinking that I may have been a bit to conservative with the cooldown/duration(scramble bombers has 30/75, missile battery has 35/180).  The DPS per cast is already much lower then scramble bombers, and while the duration should definitely be lower then missile battery, I think 1/6 as long may have been a bit low.

I'm thinking perhaps 50-60 seconds duration may have been a bit more in line with existing abilities- close, but a bit shorter to compensate for the added flexibility of being able to buff a unit of whatever damage type is desired.

Realistically speaking it's not all that different from Missile Battery.  it creates a single frigate.  The buff is significant enough that it allows a single existing frigate to carry the firepower of multiple frigates, which ultimately is aboutt he same as creating a new one.  

Heck, the closest analogue is actually the Skirantra's level 6 ability which clones a single target frigate a few times.  In the end of the day, this ability provides comparable added firepower to creating 2 clones.  Honestly I don't see how creating clones of a single frigate is all that much oe impressive then a buff that allows the same single frigate to perform as though it were multiple frigates.

Of course replicate forces is much stronger(it is a level 6 ability after all), but the basic principal is the same: Gain extra units of firepower proportional to a single targeted frigate.

What about microing the ability? I mean for the player who is fighting the Revelation, it makes since to focus fire the buffed combat frigate. Replicate Forces, Siege, and Missile Battery doesn't have quite the same problem since a player knows they will be destroyed in a minute or two anyways, while this buffs something already in existence. I'm not against this, just pointing it out.

Vengeance?

While it is true that Guidance would be comparable to these abilities, I don't think they're abilities worth aspiring to...these actually are probably my least favorite abilities conceptually as they don't scale at all (siege turret I'm actually okay with just cause it's still very useful)...

I put a version of cluster warheads on missile batteries to make them scale against larger fleets...I don't have any suggestions for scramble bombers in vanilla, though I also am working with a mod where there bomber spam isn't an issue...you could probably add Adept drone anima and heavy strikecraft up there as well, both of which are abilities that I reworked because I thought they were lame...the point is, while Guidance may be comparable to things we have, those things I'd argue need to be changed themselves...

I think some of the balance is how early you get a cap. Missile Battery is great early in the game. Siege can be coupled with replicate....giving it a second life....since the Revelation's ultimate is great for the entire game, mostly we've been working on the Revelation's early game.

But feel free to put up another idea.

Interesting approach but somewhat complex to balance especially if it gives a different buff to different abilities. Using Guidance on itself could give Reverie a small AoE and/or allow targeted ships to receive more damage before causing the ability to wear off.

Reverie does not need a 10% duration buff.  It's borderline-overpowered as is, easily edging out all the other disable abilities in usefulness.

A 10% buff is hardly, no not even close to OP.