I'm not saying that the worlds in the Federation are pure, and those outside are bad. I'm just saying that most of the civilizations (i.e the Holy Order of the Kinshaya, the Romulan Star Empire, the Tholians) that joined the Typhon Pact have a violent and expantionistic past,
Let's look at the Typhon Pact members:
* The Romulan Star Empire
* The Tholian Assembly
* The Holy Order of the Kinshaya
* The Gorn Hegemony
* The Breen Confederacy
* The Tzenkethi Coalition
Let's look at each.
The Romulan Star Empire had a history of aggressive imperialism up to the 22nd Century. Afterward the Earth-Romulan War, the Romulans locked themselves up behind the Neutral Zone for a century. When they re-emerged, it was with a history of cold war conflicts with the Federation and Klingon Empire (with at least one act of war on the Federation's part, where the Federation invaded Romulan space and stole a Romulan cloaking device).
Upon the Klingons signing the Khitomer Accords, tensions with the Romulans built up to the point of the Tomed Incident, at which point they once again retreated to behind the Neutral Zone for most of the 24th Century. Of the two confirmed instances of Romulan attacks during that period, one was the result of the Romulans being manipulated into thinking the Klingon colony at Khitomer was being used to develop a first strike WMD against them by the Cardassian Obsidian Order (
The Lost Era: The Art of the Impossible).
Upon returning from their recluse, they once again adopted a stance of tension rather than outright aggression, and even allied with the Federation against the Dominion -- only to be rebuffed by the Federation when they asked them for help against the attacks of the Watraii (
Vulcan's Soul).
Later, a Human assassinated most of the Senate, leaving the Star Empire in chaos. The Federation then chose to recognize the breakaway Imperial Romulan State (whose leader, honestly, has no less of a claim to power than Tal'Aura, given that both of them were in on Shinzon's coup).
So, all in all, while not a friend to the Federation, not exactly a Nazi army just lying in wait to capture Poland, either.
Tholian Assembly? Desperately tried to stop the Federation from reviving their former slavemasters, the Shedai, and regard the Federation's general refusal to acknowledge the dangers of the creatures they were awakening to constitute an act of wanton irresponsibility and aggression. When they talk about Federation crimes in the Taurus Reach, not even the Federation President contests that the Federation committed crimes against the Tholians. Since the 23rd Century, the Tholians have largely stayed behind their borders, though Bacco was convinced they'd take advantage of the Borg Crisis to annex some systems. I'd classify them as a moderately imperialistic power. I doubt they're out for galactic conquest, but it seems reasonable to presume they probably want more territory as a buffer zone if nothing else.
Breen Confederacy? Long history of extreme isolationism apart from participation in the Dominion War; unknown status of the Breen government that allied with the Dominion. Hard to predict them.
Kinshaya? Hostile, but hostile to the Klingons more than anyone else.
Tzenkethi? They seem to be highly xenophobic and anti-Federation, but we don't known under what circumstances the Federation-Tzenkethi war was started or for what reasons. There's no evidence of imperial ambitions, though they did try to open greater trade relations at one point with a Federation Member State, Nasat.
Gorn Hegemony? Only two Federation-Gorn conflicts. One was the result of interstellar miscommunication -- the Federation thought it had settled on an unclaimed world in Cestus III, and the Gorn thought the Federation was invading. This conflict was later resolved and the Gorn willingly gave up Cestus III. The only other incident was a result of a rogue faction temporarily gaining power -- a faction that was later stopped with Federation help. The present Gorn Imperator owes his position to the Federation. No evidence whatsoever of imperialistic tendencies on the part of the Gorn government.
that's highly unlikely to change. Regarding your comment about "Federation=good, aliens=bad", you are aware that there are hundreds of member worlds that are populated by non-terrans, right?
I assumed that in context, it was understood that "aliens" meant "non-Federation," not "non-Human."