I saw more of what I've previously seen from Cuadrado.

As I said, I do think he's a good player. The point is not that we don't need that creative element as part of our attack, another player who can possess the ball, run at defenders, and has some unpredictability to their game. We clearly do, and potentially 2-3 of them (SS, AM, and maybe even a decently offensive RWB -- although with Licht getting older, I would want a player who's comfortable at RB, too).
The point is that I would spend the money on somebody who was more suitable for our tactics, and, like we've been talking about, has more end product to their game.
Cuadrado isn't some amazing force at breaking down 'the parked bus', either. That's not exactly what Fiorentina were typically up against, and a team doesn't do that by simply running at 10 defenders behind the ball, either (which I'm sure you know). It does help to drag defenders out of position, and keep them on their heels, but intelligent movement and good passing are pretty darn important to the process, too.
Where would you field him in a 4-3-1-2, as you mentioned before? As the TQ?
Anyway, I don't want to seem excessively critical of Cuadrado, because, like I said, he's a good player, good teammate, and I like the guy's attitude. It's not like I would be 'put out' to see him stay, but for the purpose of conversation, I think Beppe and co. could spend the money more wisely.
Let's be very clear, though, Digne didn't do a damn thing offensively, at any point of the match.

Right? Roma were relatively toothless in attack yesterday, 1 long shot on target. Nainggolan playing TQ was also quite limited, he and Pjanic definitely should have had different roles.
Caceres is not an option for you?
Looking at next year, I think we can do better. 20M, plus a 4 or 5 year contract at his current rate (3M net, 6ish gross) is not some huge bargain.
Spending between 40-50M on Juan Cuadrado, to offer limited production while occasionally playing RWB, is not the move I would make.
I think Beppe and Paratici can find a better player for our particular needs, operating in that type of price range.