These are all really good points. There would be a lot of risk involved in such a deal, especially given Pearson's injury/performance history. He has some really enticing abilities, but he hasn't figured out how to harness them yet.
TopGunn: yes, I think you also bring up some good counterarguments. Hypothetically, if they could get more value than just Pearson, then taking him straight up would be a dumb move. There are definitely prospects on other teams that bring a lot to the table. I guess I'm just enamored by Pearson's unique blend of velocity and repertoire, which is why I wanted the Twins to draft him when he came out. You don't find many guys who throw 100 with the fastball and 90+ with the slider. Two that come to mind are Syndergaard and DeGrom. Now, no one's upside is DeGrom except for DeGrom himself, but if Pearson puts it together he can be a legit ace.
This is all assuming the Twins are interested in trading Berrios, of course.