Like indoctrinated aliens of all races?
Indoctrinated peoples of all races. Happy now?
I'm not sure what you mean by indoctrinated. Husk representation of different species is quite high already.
The only missing ones are small species like Hanar, Drell, Elcor, Volus, Vorcha, and of course Salarians. They made husks of Human, Turian, Asari, Krogan, Batarian and Rachni origin.
Out of the missing species, Salarians are the only council species and likely the only one with numbers to make any difference. Their homeworld was not invaded so it makes sense to not have husks based on them - Asari husks only appeared after the Ardat-Yakshi monastery was invaded by the Reapers, and Turian husks started appearing on Palaven.
One might make an argument that Elcor husks could have made an appearance after the Reapers invaded their planet, but they already had Brutes and Ravagers, and Elcor husks would have likely been rather similar to either of those two enemies. I think the Vorcha were too primitive for the Reapers to pay any attention to them (same as with the Yahg), and they probably couldn't figure out any use for Volus husks.
Drell husks might have been useful as sort of analogy to the Phantoms from Cerberus, but again Drell have a very small population living on the same planet as Hanar, and I didn't hear anything from that planet being invaded during the game. And Hanar husks would be all sorts of ridiculous anyway.
Point is, the Reaper faction has quite a solid representation in the game, and adding husks of the rest of the species would not have added any substantial variety to that.
Indoctrinated people would make sense if there were populations that were in contact with Reapers or Reaper technology, that somehow managed to not be stomped on by the Reapers or being huskified by the Reapers. By the time of ME3, they are actively invading so odds of finding that kind of situation are sort of low. That made sense in ME1 and ME2, but in ME3, huskified enemies are more likely than merely indoctrinated.
Besides you could make an argument that Cerberus is an indoctrinated human faction, sort of. There's really no similar justification for indoctrinated enemies from other species, but even if there were, what would that accomplish?
Cerberus is a good enemy faction from gameplay perspective. Whether you consider Illusive Man's motives sensible or not is a different matter.