You get more science for actually bringing it back, and if you transmit it you can always collect more later. But yeah, if you've done all you want to with it you should be fine to dump it.
Taking soil samples on Kerbin seems silly, couldn't they drive to these locations? hah.
There is a career mode now?
Science question for others trying career mode. If I just have a single mysterious goo, I can record one bit of data then either send it back (lots of electric usage and only 40% transmitted) or keep it. However I can then only get one bit of data.
If I have 2+ that I've fitted using the mirroring tool does it count them all separately so I can have 2+ bits of data?
Might be a stupid question, but do all planets (and moons of planets) orbit anticlockwise?
Rather than doing multiple samples and keeping them.
I'm sure it could be balanced well enough. Great big clunky looking harddrive module. Have different size ones for different missions.
Could have a rockomax sized one for a big station orbiting another planet for example to make trips to the moons efficient
Then be able to transfer all the data back to a single ship to bring back to Kerbin leaving the satellite in place perhaps.