So we can safe rockets and sandboxes on our computer and upload them to our phone, so we can play on the same lvl on our phone as on our computer.

We kinda already have that with the Simplerockets subreddit, as well as the subreddit srmod.

If you use the "Email Rocket" option (in the menu with Open and Save), it will generate a link that you can then use anywhere to share them with people. Lots of people post them on the SimpleRockets subreddit.

It would be great if there were a way to players to share their rocket designs - I've seen some amazing designs that look incredibly complex, and would have no idea what order things are supposed to occur in, if I tried creating them.

Now that mods are supported and many people are starting to create and use them, perhaps there should be a website to upload them to that keeps them categorized by type and function, and lets users search them, post reviews, tips, etc. The subreddit is working for now, but as posts fall of the front page they get lost to the annals of reddit.

Something like this would make sharing a lot easier, as well. Currently to load a saved ship to my Android device, I have to send the URL to myself using email or Pocket. A direct "save to device" would be great.

Logging in with Facebook or other social media could allow us to play on multiple devices (I.e. phone and tablet) and still have access to our saved rockets and completed missions. Also, easier sharing of our creations and achievements.