Endless Mode Sudjestion

I was thing about things at the end of the tech tree (Hadron Collider, Atomic Sequencer, Cultivator, etc.) and I realized how you never really get to use them before Completeing the mission. So I thought It could be a good idea to have a endless mode mission were (with some optimization so the game plays smother) you get a mission after you complete the last. You can have missions like “Have one drug that uses the Hadron Collider”, or “Produce a product with a side effect that has a catalyst”,etc.