So that the player can begin working on this massive project a bit sooner, it would be nice if the research was split in half. The first tech would be something like Rocket Silo Excavation and require only the red, green, and blue science packs and allow the player to complete the first three stages. The second technology would be the same Rocket Silo that we have now which allows you to proceed through the remaining stages.

I'm reminded of the way Titan class ships are handled in "Sins of a Solar Empire". Completing each research stage (5 total) allowed further construction progress on the Titan.

Yeah, there are lots of big, multi-stage projects in various games, the most relevant is probably the space elevator in Satisfactory.

Yeah, there are lots of big, multi-stage projects in various games, the most relevant is probably the space elevator in Satisfactory.
my other mod, mining space industries, has something like that. You have to send expensive cargoes to space, as demanded