I wonder what was the gameplay decision behind and why the play testing has resulted into "That's fun!"? 

This would be great system!It could be about efficiency and progress of sample.
No minigame- 1/3
"partially" succes- 2/3
full succes-3/3
What is your explanation that you have to pass other unscanned plants to fulfil three scans and then to search again the others you've already seen?I have to disagree. I don't find it frustrating.
I don't understand the question.What is your explanation that you have to pass other unscanned plants to fulfil three scans and then to search again the others you've already seen?
We don't have to, that is a choice. The other choices are normal flight in a ship, driving in an SRV, or the shoe-leather express.And..... Why do I have to go to SC to see where the next specimen is?