How much of a human/alien squadmate divide do you want?

I want the squadmates to be interesting. I'm not hung up on any one species being part of the squad. If we have two Turians and one is boring, mostly, except for loyalty missions, I'm going to stick with the more interesting one ... assuming the boring one doesn't have some unique talent (power) that is helpful on a mission. So in effect, two Turians, if one is boring, is a waste. I'm just using Turians as an example.

The same applies to Krogans, Salarians, Asari, Quarians, Volus, Elcor, Hanar, Drell or Batarians. On the other hand, having five Vorcha squadmates would be divine. As EDI would say, "that is a joke."

I'm really not into bean counting ... it is counterproductive in the extreme. If the Krogan is the most interesting character for Ryder to stomp around the universe with, then Ryder will mostly stomp around the universe with the Krogan. And all the Asari, Rachni and Yahg squadmates can just cool their species-equivalent heels on the Tempest. And it's not limited to species ... the same goes for gender and all manifestations of sexuality. I just don't give a flying crap. Unique talents (powers) that are useful more broadly ... or to a specific mission ... that's a different thing entirely. 

Make all the characters interesting and I'll probably mix it up pretty well ... based on mission requirements and as I go through multiple runs of the game. Realistically, some will appeal to me, some won't ... so I'll end up with some on Ryder's missions more than others. In specific cases, it might depend on whether Ryder is the male or female version ... as to which squadmates I prefer Ryder to team with on a given run.  But mostlly talents ... if a given squadmate has talents (powers) Ryder needs for a mission, then that squadmate goes with Ryder ... irrespective of the species, gender or whatever, of that particular squadmate, and irrespective of whether I find Ryder's squadmate interesting or boring.

Typically, on the first run, I go with the lowest (non-"narrative only") difficulty setting.  It allows me to explore not just the story, but the talents and characteristics of the protagonist's squadmates.  Experience as many conversations as I can.  On subsequent runs, I amp up the difficulty and specific talents of specific squadmates becomes more important ... plus which characters I find more interesting ... so some end up "on the shelf" while others get to go out an play more frequently.  Bean counting other attributes just doesn't come into play.