It's a good thing we have so many examples here where that scenario worked
. Native Americans, Mayans, Aztecs ...It's not a bad scenario, as long as all of the species evolved at such a rate that they all arrived at a sufficiently-enlightened point at the same time, so that when they encountered one another, they didn't have to dominate one another; it also presupposes that each environment is sufficiently unique that the 'invaders' don't want or need anything in the new land, in which case, why are they there? Scientific knowledge? Pure enlightenment? I'd even buy these, if the Xindi hadn't completed a preemptive strike on an alien species that they had been prophesied would wipe them out in 4 centuries; why would enlightened, cooperative peoples shoot first and only ask questions later, if ever?
Better, but what about their unenlightened charges? Would the caretakers be loved, revered or feared? Would the 'children' ever rebel against even the most well-meaning of overseers? Let's ask humans about the Vulcans after a century of well-meaning oversight ...
Honestly, I'd be more inclined to accept the "Moreau Hyptothesis," of all of them (though if they were genetically engineering other races for these planets, I'd think they probably would do so to adapt them to the local conditions, rather than engineer them and 'xindiform' the planets as well).
We can only wait, and cross our fingers; at this point, though, given what we've been told, and who is responsible for this "kewl new idea," I'm less than positive about the outcome.
). TOS needed the transporter, because it was too expensive/time-consuming to do a convincing shuttle landing every week. Will there be a reason for five seperate alien species, all coexisting and working together on one homeworld? I guess we'll find out Sep 10.
Actually, while the 'extermination' scenario became popular in the political climate of the 90s (another sign of the decline of the left wing), there is just as much evidence to suggest that Neandertals were absorbed into early modern human populations. Were Neandertals the victims of human 'viciousness,' or is human 'viciousness' the result of interbreeding with a more primitive species? The answer depends on which party you belong to. 
Also, marsupials did not evolve in Australia, they merely thrived there (earliest records are from North America, if memory serves). They also thrived for a time in South America, until a land bridge allowed placentals to migrate south-- I wonder if the placentals viciously wiped out the marsupials or if they just did better. 
