Well, I will go back to an earlier post...
You're looking for something new in universe. A new setting, new worlds, etc. So, the idea is that it not only would be new to us, the audience, but new to our POV characters too. What I am saying, and you're agreeing with, is that there is less fleshed out things in TOS era. I just think we can use SNW as a "lesser known" era and flesh it out.
Hopefully that made sense.
I understand what you mean. I just also like seeing what we already have get fleshed out, something TOS didn't do all too well, and while we definitely could use more alien races in that era than what TOS & TAS showed, I think seeing more of the ones we had but not enough of, or even underused Berman era species, would be more interesting to me in terms of expanding on that era
Whereas fleshing out an entirely new race in an unexplored region of the galaxy appeals more to me in a "current era" show because it doesn't run the risk of being restricted in terms of expansion and breaking canon (which can be avoided but is riskier in a prequel)