InterAirplay said:
Still a bit of a kicker when there doesn't seem to be any real reason why a suitless quarian has never been photographed... or why their fucking visors aren't just transparent.
There is a very valid reason which explains why you never see a quarian out of his/her suit and why they have never been photographed "au natural", and that stems mainly from the lore. I believe Tali even explains it herself if you talk to her and ask her about the Migrant Fleet. A quarian's immune system is fragile enough that they have to wear the environmental suits constantly when "abroad", and the filtering systems on the Migrant Fleet (composed mainly if not exclusively of decrepit old ships) often fail. A smart quarian learns from a very young age to wear the suit at all times, even on the Migrant Fleet. However, should a quarian wish to remove his/her suit, he/she must take a vast array of immuno-boosters in order to do so safely, and even then, there are inherent risks. Most often than not, the risk isn't worth it.
Additionally, you might recall that strangers are rarely allowed on board the Migrant Fleet, one of the few places a quarian would feel safe enough to remove the environmental suit.
Bottom line, the only instance in which a quarian removes a suit is during intercourse, giving birth or upon death, one would surmise (and I even have doubts about death, since the suit ultimately becomes part of the quarian and his/her identity, customized extensively as a way of expressing oneself). Removing your suit is the highest manifestation of trust and affection for a quarian.
As for the "fucking visors" (I know you're frustrated, but dude, chill! XD ) which are mostly opaque, my guess is as good as anyone else's. Privacy? UV protection? Hypersensitive corneas? Or maybe BioWare just didn't want you too see what a quarian looks like and wanted them to be mysterious. I, however, have a nagging feeling that they themselves don't know what quarians look like.