[quote=@Forsythe]
TL;DR: consistency > freedom

The 5th better have some good explanation on how it came to be then :/ I am all for freedom of choice but you have to admit that there are a few problems with it. If they're a splinter group that originated form Sol, it would invalidate Duck's entire history, something he put some work into for a change. Given these are early space nations, It doesn't make sense for it to be done in secret - somebody would definitely miss even a single FTL capable ship. ANd I'd rather not see many more interdimensional and any time travelers.
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One way to make a splinter group is simply a sabotage of an FTL capable ship by terrorists or something, which caused the possibly-a-colony-ship to go way off course and keep going until it smashed into a semi-habitable moon or planet, in which they started over from scratch because they were stuck. Like something from a Christopher G. Nutall book, or like the game Rimworld.