Space Empires I

[Fyron]

And the superior build queue system.

[Suicide Junkie]

The local build queues were less advanced... you could only build one unit at a time.

If you mean the global ship/base queue, that's certainly different with advantages and disadvantages. It was quite easy to prioritize your project funding across your entire empire.

[mottlee]

I remember being able to start to build a ship at a space station then able to move it to a ship yard (or the other way) with out having to start over

[Azselendor]

Good times, good times. I remeber SE3 fondly for that.