I've always liked Vucinic and Pirlo, Vidal seems to be a good player, great signing if he adapts to serie A quickly. Lichsteiner is a big upgrade at RB.
Lots of pointless deals though, like pazienza and giacherinni. Elia definitely has the talent but needs a lot of work on his attitude and end product.
Too bad you still have Amauri and useless players laying around somewhere, but given the circumstances I don't think it was a failure and Imo you do have a better team than last season.
Barring a big injury crisis I think you'll be fine this season, if you make it to the CL come next season I'd expect quality signings.