>>16815109
>the hacking mechanic has some serious contradictions
It's a very badly explained mechanic and to be honest I'm not sure how they'd even go about explaining it in the first place. It's not too complicated, but it's really not easy to put into words.
For your example, "I've had hacks shut down by factions that I started from their home system when the tooltip says that's impossible", whenever you start hacking an owned system AND that system has ANY defensive program at all, it triggers a trace signal that will try to reach the source of the hack.
General thumb rule is that the trace is about twice as fast as a hack and very little changes that. So if you start hacking from their home system into a system next to it that happens to have a defensive program, it's going to trace it back to the starting planet before you finish even hacking that planet.
What you WANT to do with hacking is make a long ass route of secure nodes that you know have no defensive programs, put your own there to assist and make it take as long as possible to reach the source. Hacks that take 20 turns are the average for instance.
You should also consider that, although the entire hacking mechanic is convuluted, it's effects are quite powerfull if you can exploit them and the Umbral Choir is a beast if you master it.
>>16815094
>races that are somehow EVEN MORE broken than Riftborn. I honestly don't know how that's even possible, but that's what I've heard
Speaking of which!
The Umbral Choir are a faction that have no home and everything they own is cloaked all the time.
They have a main base that sits in a special system and can be expanded to house more population by building extra space, but they can't make more bases. At best they can hack a special system (any that has no planets), make a relocation beacon there and teleport their entire base there. Do it before charging it and you damage your city though, it's an evasive maneuver in case your base is found.
What they have instead is Sanctuaries. Basically, if they can hack an unowned system, they can build a sanctuary there that houses population and sends resources directly to their base. Another faction can colonize a planet in that system and never see the Sanctuary, oblivious that the UC are there! The relay beacons they build also give the bonus of that system to their base so you can build more (but they consume Bandwith so they limit your hacking).
So basically, you have a single base that is collecting resources from all over the fucking galaxy, building and expanding incredibly fast in late game.
This is not what makes them dangerous or abused, though.
See, one of the hacking operations anyone can do is turn a citizen into a Sleeper. Sleepers give visibility into a planet and are counted empire-wide. At 5-10-15 you drain part of their economy as well with greater amounts.
However the UC has a few more options here since they were the faction that introduced hacking.
With 2 or more Sleepers, they can build a Sanctuary even in an owned system. And with a Sanctuary, they can sacrifice one of their pops (that they grow super fucking fast) to automatically convert a sleeper in that system. They can cover every faction with a gazillion sleepers and drain their economy to grow even faster, seeing everything their factions are doing.
And if they finish a hacking attempt, they also have the option to abduct all the Sleepers in that system into their planet, transforming them into a special pop that has a massive FIDS bonus.
But wait! There's more!
The UC isn't limited at producing population or ships in their home system and send them out, they can pick a Sanctuary anywhere in the world and set it as their spawning point of population and\or ships!
So if you declare war on them, they'll use the Sanctuary they placed in one of your core planets to buy and produce a gigantic fleet in 5 turns that you'll never see because they are all cloaked and your system will be consumed in a single turn! Imagine an Obliterator literally popping out of nowhere! Imagine a faction that can actually BUY A FEW PER TURN ANYWHERE IN THE GALAXY.
After a while, you do end up feeling like the Dick of the Galaxy. UC has no real land to defend, nothing in particular to contest and if they start fucking with someone is either because they joined an alliance or they are bored. And the only thing that counters them is strong anti-cloak detection and good firewalls.