I look at things in terms of individual alliances, than after I've done that, I look at things in terms of alliances and their allies.
The Union: I think we are the closest and most elite group in Eta thus far. We have bonds none of you know about, but we get creative with how we do things and it's worked so far. Our alliance profile, first thing says "United under The Union, protected under The Union. We will crush those who choose not to respect us and our authority. Union word is law." Now of coarse what we say isn't law, but we present ourselves this was because we want it known that we have the mindset to make things happen.
Night Warriors: They seem to be tight enough. They are looking good, but gaps are crazy between cities. Controlling that many oceans at once must be one hell of a task. Now their academy looks horrible. I'm going to be honest, they need to go through some cleaning with about 10 vacuums, 5 dusters, 2 maids, and a flame thrower to burn the trash.
Apocalypse Warlords: My friend Ruthar once told me an alliance profile speaks a ton about the alliance. Well I LOVE this profile. It seems to do a good job and do the group justice. I like them, in many ways. One alliance that The Union has zero ties to, but I still respect very much. They have something going, but are just too out of the way to mean much in my view right now.
ALL IN: This group is going through crazy changes. If they were ever weak, it would be now. They are with peace on TU's boarder and seem to be expanding in every other direction. With a non-solid player base, this group worries me, but they have the man leading that can pull it off.
Wolfknives: Another group I like. They have been solid throughout time and are showing they can take on some wear and tear. They seem to be another very steady group and don't seem to be budging anytime soon, without be targeted further. At that point, they seem breakable.
Ne Oublie: Yup.
Oceanus: Solid group and solid leader, but too spread again. Same as Night Warriors, but with their main alliance needing cleaning as well. I question the use of brother alliances/academies heavily, but hey, who am I to question.
Skipped a couple, but it seems the others aren't so relevant to me, and this is my view.
The Union, ALL IN, Ne Oublie?:
Ok so here's the first batch. Now first things first, The Union has been allied with ALL IN since really the beginning. Ne Oublie and The Union are working closely, but I'm not sure I could count us as the strongest allies ever. Now, the whole support alliance down south might have been appropriate to add to this group, but I'll keep them separate simply because I think it is better that way.
Oceanus, Maelstrom Warriors, Night Warriors, Night Fall:
Well, by far the biggest and most integrated super group of Eta. They are just huge. Now, my opinions? I like working with them. They are effective in controlling oceans, all that. BUT, do they know they should be cleaning? I don't know. Do they know they should at least shuffle up to be a little less integrated? Maybe they just don't want to. Management by ocean would be much easier than just scattered everywhere. I like them, we are nice with them, but the fact remains, they are huge.
Spartacus and friends: As much as I hate to say it, it seems Spartacus has some lovely friends with lots of lovely support. Independents are all around this ocean, so they are considered allies in my prospective to some extent. They don't want another alliance in their ocean, so stacking seems to be the answer in many cases. Fatal Nemesis and them also seem to playing nice, with some support here and there. A group to be bargained, because you don't want to be trying to hit a stacked city with 3000 BR's or more. It sucks let me tell ya.
After all that, it seems pretty interesting. I see the pattern of certain alliances relying heavily on others. I don't see any one alliance, minus a few cases, that are really self-sufficient. I also don't have all the information to really make this 100% accurate, but this is how I see things. I hope you see things a little differently too and can differentiate perspectives when looking at alliance. Good luck. :-D