It all depends on where you want to be in 2016 season and what you are prepared to get done what you need to do.
Here is a fantasy to get to being a serious Premiership contender in 2016.
At the end of 2015 season Kelly, Rivers, HMac and Enright retire. Maybe 1.5-1.75 million freed up in the salary cap is my estimation.
Then we get a retirement plan (2 year contract on plenty of money) for SJ and Mackie. SJ because he may still be worth GWS' first ND pick and Mackie because he definitely has 2-3 years left of good service in him. I think we could get picks 8-12 for them. Two ok first rounders (say for argument picks 8 + 10). And another 1-1.25 million off the salary cap.
I assume we do ok this year and end up in the top 6 and win one final - and end up with picks 14 and 32 in the ND.
We go to Danger and offer 5 years at 5 million as a FA. And once we secure him 0 then it gets easier to go to the Saints and say we will trade Murdoch and our pick 8 for Stevens. We offer him a 5 year deal worth 2.5 million.
Then we two midfield guns and Clark rucking to them - we will have again a gun midfield. Who would not want to come board - and Stevens knowing Danger is coming will be lured home I would hope.
Then we go to Freo and say we will trade Kersten and pick 10 for Walters for Walters - so we get what has eluded us since Chappy left - a good crumbing, small goal kicking forward. Off him 5 year deal at 2 million.
All of the 3 players mentioned above would know (assuming GFC has a decent 2015 season) with those 3 A graders in the side we are definite Premiership chance in 2016.
If we have no injuries this is the side I see if we had these new players - (finals team for the 2016)
Bews Blitz Kolo
Thurlow Harry Guthrie
Motlop Selwood Cocky
Duncan Walker Hartman
Bartel Hawkins Walters
Foll - Clark Danger Stevens
Bench - Stanley Caddy Lang
Super sub. Stokes.
Emerg. GHS (spare on baller if needed) Lonergan (spare KPB) Simpson (spare ruck) Vardy (spare KPF).
This is a super talented and super quick side that still has size. Line breakers and X-factors.
The weakness of this side is its youth (so transition over with this team). You would think by the business end of 2016 we would have the following players having 50 or less senior games experience - Bews, Lang Thurlow, Cocky, Walker Hartman and maybe GHS. That is 7 relatively inexperienced players in big games - quite a high number.
However the top end talent is pretty high as well to make up for that inexperience - and it depends on the individual player a bit how quickly they adapt to senior footy before they become good players.
The backline looks young and a bit inexperienced but has been reinvigorated with pace and goods kicks and decision makers.
The forward line looks pretty decent as well. Plenty of marking power and quite a few goal kickers.
The midfield looks very good. Gun mids in Selwood, Danger and Stevens with good back up from Caddy, Lang, Cocky, Motlop, Duncan, Bartel and Stokes. It runs deep enough and has quite a bit of talent and pace. Add in Clark as the first ruck - and that is a very good midfield IMO. Stanley we hope is a decent second ruckman and makes our whole more flexible and quick. Even the rucks are mobile and have some leg speed.
And having so many young guys (smaller pay packets for 50 or under game players usually and there are about 7 in this team) in the team means we can afford the guns. Sure as young ones make decent progress so will there salaries be adjusted I think we could pull it off.
Its all about getting these 3 gun players to see what we are doing (building a super list very quickly - like North did in the 70's) - and them recognising they could be part of something special and still getting quite well paid to win Premierships.
You could do a similar exercise with the top 10 teams in the league. If you add an a pair of A grade mids and one of the best crumbing forwards in the league to any half decent team, they'll become a premiership threat. This scenario is so unrealistic it hurts. AFL trading isn't a video game like football fanatic where you can turn 31+ aged players for top 10 picks. Recruit players a year after they sign a 5 year contract for even less money.
Just getting Dangerfield would be a massive coup.