User blog comment:SolitaryReaper/Shepard in Javik's position/@comment-5267262-20120726225450/@comment-1679409-20120727065816

Three points regarding leaving the raloi, vorcha, and yahg behind.

First, 50,000 is a long time. Even for asari and krogan, the two longest-lived species of this cycle, that's still around 50 generations. To the raloi/vorcha/yahg of today, the Reaper threat will seem very real. Within 50,000 years, the Reapers may become just another myth to many/most/all raloi, etc. So, it's possible they may not do as much preparing for the Reapers as you might think, if they prepare at all.

Second, who's to say a cycle has to be exactly every 50,000 years? That's normally how long it takes for things to rebuild to the point where it can be harvested. But the raloi in particular would not be starting from scratch. They're at the point where we were circa 1960; they're not living in caves or licking their eyes. Therefore, it may take only 1,000 years or so for the raloi to reach the point where they can be harvested.

Third, I know it says that the yahg homeworld is being spared currently, but I don't remember it being said that it was a guarantee that things would stay that way (although it was implied admittedly). The Reapers' campaign has a logic to it in that they bring their full force down on probably the three races with the most fleet strength (and have considerable ground strenght as well): the batarians, humans, and turians. They don't go after the asari, who are not capable of trench warfare and frontal attacks, until much later. The Reapers don't attack Sur'Kesh until the very end of the game. So, who's to say the Reapers aren't dealing with the biggest threats first before turning their attention to cleaning up the weaker races?