Im not a Advent player. So with DS Im not sure how well the Advent do. But given that DS just amplifies what the game already presents...Though I dont see a blood fest with the 70% phase bypass. But feel free to ask an Advent DS player the details.
Anyhow...
The Domina's change I made pre new pacts. I thought the 15% plus the other buffs it does justified the channeling. Im not a fan of removing the channeling, ok maybe the face target but not the channeling. Advent has some strong overall battleball style ships/abilities/etc. The channeling IMHO strengthens the notion that an Advent fleet is suppose to ball up and outlast the horde. Im sure Im wrong in my observations, Im not a primary Advent player.
POH already disables/removes a ship from combat/heals/damages. It does what 4 or 5 other abilites already do. Granted they are better but its an awesome varied abilites. Its downfall is that using it to 'save' one of your ships just doesnt work. Because it disables movement. If your fighting a losing battle and need to start pulling Caps and other high value targets out you cant. If you just tweak the targeting so that movement is not disabled on friendlies, this ship becomes awesome for last second saves. If your worried about it being OP'ed just reduce the speed while under the effect of POH.
Animosity wise, I just added a new buff to make X amount of ships around the Radiance Invunerable, while still taunting surrounding enemy ships. Maybe not anything balanced but I think it what that abilies needs. Some may argue that it needs a damage reduction element but with sheild restore and Vengance...or even add Malice, or Vertigo. The combinations already provided work.
Subversion, I made passive. Yes passive. It damages planet .5% of max HP every 5 seconds. Reduces ship building, increases damage structures take(not including SB's), and reduces income/resources. Again, might totaly bad idea but it works for me and my style of game.
There are I think a few more things I tweaked abilites wise. I also buffed scouts. I am a total supporter of 'battle' scouts. It curbs the LRF horde early game and promotes LF usage.
Another thing I'll bring up is if you change bomber armor to the same a fighters...you see the issue of bomber spam gone. Again Im in a minority that thinks SC should be treated like abilites/support. Not a critical element of a fleet, by critical I mean main DPS. I hate SC with a passion, the fact in team games you can 2 great mixed fleets having a great and fun battle and an ally can bring in 10-20ish Carrier Cruiser and proceed to decimate everything you own from the edge of the grav well. Its not fun gameplay IMHO. SC should be treated with care and not just thrown non stop into the meat grinder. They can add a huge tactical element, but I dont like their current iteration. But that just me.
Im not one to tell anyone what is best for overall balance. Im a modder, so Ive modded a few things that I thought made sense overall. Just another point of view for the eternal battle of 'game balance'.