User blog comment:Arbington/ME3 Theories/@comment-2130363-20100630233459

I have a feeling they might never show female versions of the aliens in ME3. I forgot who said it, Wreav maybe, but he said the female krogan have their own clans and aliens will never be able to see them. There are very few female salarians around so I doubt you'll be able to see them either. Not sure about the volus or the elcor. There's a strong possibility they might show them. A female elcor may just have a bow on their head. Well, I just found my next photoshop idea.

As for the Reaper fleet's alternative to invading the Milky Way, I think it's as simple as creating another mass relay. They were the ones that created the relays in the first place. Perhaps all they need to do is sacrifice a Reaper or two and use their parts to make a new relay, connect to a backup relay hidden in some nebula, say the Omega 5 relay, and voila, let the extermination begin.