They pretty much were. The wall containing the windows is closer to horizontal than vertical. By my estimates, their slope is in the 20-25 degree range, which is a pretty close match to the blueprints.
The only thing that bugged me is that they didn't build the window wall to be invertible so they could show quarters on the underside of the ship.
IIRC, the set was built so the wall and windows coud be inverted, but it was never used much to Andy Probert's dismay. (However, I may be misremembering something I read in an interview.)
SPACE: 1999. Nice standing sets at least in the first year.
Main Mission, the tube shuttle and a corridor or two were the only standing set in Year One. The corridors and other sets were panels that could be rearranged over and over again to create new sections, like crew quarters or the medical section.
But I loved the sets in SPACE:1999, especially that first year.
RE: Babylon 5
I was never too impressed by John Iacovelli's production design. He had a mostly theater background and it shows in his approach to set design. The station sets didn't have that realism that JMS promised when he was promoting the show before it even aired. Nor did they look particularly sturdy.
I though the B5 sets looked better in "The Gathering" than they did during the series run. That's because the more dynamic lighting and smoke of the pilot hid a lot of the flaws in the set design. That being said, I was impressed by the central corridor set and how that could be redressed as the Zocolo or any other part of the station. Although, Peter Ledger's
concept drawing of the central corridor included a tram in the middle ... that would've been neat to see.
Also loved the heavy jackknife doors of the sets.
Moreover, I thought the CRUSADE sets were much better.
RE: TNG
The Enterprise sets looked much better in the first two years of the series. It's a shame that Andy Probert and Herman Zimmerman left after the first year. I felt the production design for other Enterprise sets became more boxy and unimaginative under Richard James' watch. The curves of Zimmerman and Probert's approach seemed to vanish when they left the production.
Re: Seaquest
The sets were spectacular in the first year when they filmed at Universal in LA. But the set design plummeted when they moved the production to Universal in Florida. The bridge in the first year is spectacular. I loved how they had four conn controls to move the sub and a conning officer directing them. I also like how, like BSG, didn't have a huge captain's chair dead center on the bridge. (Yeah, they had one off to the side ... I know, but it wasn't dead center).