I'm finally coming to the end of my first playthrough, still on 0.98B.
For the last month I've just been building vaults and enslaving everything I can get so that I can store the stuff I need for the Conqueror. (And at the same time, building up the money I need.)
I've finally got all the materials, and I'm sure that if I sell some of my spare weapons and chips I can get the money within a day or so. However... I'm kicking myself that I didn't notice that the Conqueror requires 100 workshop space!
I usually don't even look at workshop space, since very few things in the game need it. So I just didn't notice it. And the base I've been setting up for the Conqueror is not my factory base; I decided it would take too long to get the storage capacity high enough in my factory base, since it has zero vaults, and zero free spots. (It's 100% slave based storage. Enough to build a Dragon, but not a Conqueror.) I'd need to sacrifice my industrial printer to build the vaults, and so I decided to use a different base instead.
So now, I've got everything I need except the workshop space. I've decided to trash one of my hangers to build an industrial printer so that I can build the Conqueror.
I don't mind that the Conqueror needs a ton of resources and a specialised base; but I just wish I'd known it was coming. If I knew that's what I'd need in the end game, I would have set up a base for it in advance. My last two bases are interceptor launch pads, with training facilities, basic defences, and manufacturing. I could easily have created a second factory base instead; but I just didn't think I would need it.