The photo you posted is a bit more believable for what someone might actually see, with some stars significantly brighter than others. I'd believe yeah maybe Miqo'tes have better eyesight than humans do, maybe elezen too, but I'd probably rate hyurs, roes, and lalafell as more or less human-equivalent in eyesight. So I probably still wouldn't prefer quite that many stars but somewhere in between would be a decent compromise. That and too many stars rendered I think would make it generally look like distracting clutter rather than something I could appreciate.
If we really wanted to be ultra-realistic, it would also be mostly wrong to include the color of the galaxy. Cones just don't work that well in dim conditions, and the rods would take over, leaving only the brightest objects with some slight amount of color distinction. Stars colors from red to blue, yeah the eyes can pick that up but the galaxy in color, nah. Just a smear of grey...
That said, I wouldn't have a problem with a little low-saturation color to liven it up... it's a game after all and I'll take some prettiness over hyper-realism hands down.
[Also yeah, you were right, the number of stars brighter than magnitude 6 is closer to 5000 not 3000. Lapse in my memory :P]