Your expectations were way out of line with Star Trek and television then.
I disagree completely.
We are given a premise where it is STATED that resources are at a premium, energy must be conserved, we are alone and we have teamed with the enemy.
Any intelligent viewer would make the logical assumption that this would be carried out throughout the series, not necessarily through strict serialization, but just as a main concept.
And it was practically ditched after the first episode. The premise set the expectation. And there was ZERO adherence to it.
You don't have to have serialization to have continuity.