Pretty impressive building a KSP rocket builder in 4 days, and I had lots of fun completing the game. Couple of mild annoyances I encountered:
- The pre-placed parts were sometimes not what I actually wanted to build (there was a pre-placed decoupler on top of the top-tier engine's tank when I wanted a double tank). Possibly could use whatever the player built in their last rocket (unless they just upgraded their first stage)?
- Nose cones weren't being duplicated across radially-attached parts
- Time warp shouldn't happen in space if you have remaining stages (lost a couple of runs to this)
Also IMO you should only win by reaching the moon with a command module, but I'm glad the game allowed me to continue playing and attempt this.