My main one for Burgoyne (tossing between him and Gibson) is that Gibson will become a rebounding defender with the arrival of Frawley so Burgoyne will cop a little less attention from defensive forwards.
Malceski is priced at what he scored last year, it is difficult to be over or under priced unless they miss most of a season, also being at GC he will get more of the ball in defence than he did at the Swans and he will be the main rebounder whereas at Sydney he had to contend with Mcveigh, Shaw and Rampe as well as later with Rohan. Also Christensen has finished his apprenticeship at Geelong and is ready to move psat 70-75% gametime to a fully fledged midfield rotation at a club that needs high quality midfielders a little more than Geelong where he will get a bit more responsibility (hopefully)...
IMO Petracca was the best player in this year's draft and looks set to pull an Ollie Wines, built like a brick sh*ithouse, explosive like dangerfield, good overhead mark, great vision and flexible in his rotation.
Although I have considered dropping him for say hogan and bringing in a super premo for christensen as well, still deciding, early days.
I'd be wary of getting a 32 year old for 500k. Malceski is overpriced IMO in regards to him needing to average the same as he did last year to hold value. He's also 30+. I wouldn't pay 566k for Eski when I can go cheap in defence and get a Deledio/Prestia/Watson/Danger for a similar price.
Christensen will probably improve, yes. But he's your M4, and to be a top 10 mid needs to average 110+ which I can't see him doing. He's also an awkward price so he won't make you much money.