Tl dr
Reusable rockets feels like a great fit for space age
Why
It is kinda sad that in space age there are no advanced rockets. Reusable rocket would be a nice fit.
What
New rocket type, locked by several planets (volcanos and fulgora maybe). It didn't have to be cheat like trivialization, the rocket would cost much more, let's say 5x more, and would need to be fulled and repaired after each flight. The repairs would start at lets say 75 percent of the rocket cost, and by research, the cost would be pushed down, but the research itself would require number of starts. There could even be a chance for the rocket to crash. If that would be the case, the research would require not only total number of starts, but number of starts with a single unit.
More rocket types
Moderator: ickputzdirwech
Re: More rocket types
Maybe the player could manipulate the chances by not utilizing the full capacity. And the rocket research could be also expanded to increase the capacity of the rocket, meaning that the rocket might start with smaller capacity, but then be greatly improved. Besides the science beakers, the number of starts could be used as currency for the research.