Sounds like you're talking about Babylon 5 there . I was a big fan on its original airing. S1 was fine, not sure why you thought it was light. Other than growing pains, some excellent stories.
They'd wrapped up the Arc early expecting early cancellation, still some great single episodes, like the future 1 when Garribaldi as a hologram hacks the system, and alerts others to the planned attack. Battle from the point of view of lowly repair guys excellent to. Jusy ignore Byron lol
Yeah, I'm aware of all the drama surrounding the series. Still holds up today. You can watch online for free, legit. https://www.go90.com/shows/babylon5