It seems to me the age of space-opera on TV is over, for now.
That's because the age of "TV" is more or less over.
Look at this year's Best Drama Emmy nods:
One is already streaming exclusive.
The others are:
Two are on premium channels.
Public broadcasting which is essentially premium paid for by taxes and donations.
And a basic cable channel.
All of those translate easily (and naturally) into streaming content. It's the wave of the future, and it's only a matter of time before the floodgates open. When they do, it's a whole new ballgame.
Oh, and yes to Klingon 300 please.