Not so certain their game styles will be exploited, wc showed this year they were the only team to break down pressure systems and almost got done by those systems in the 2 finals against the Pies.
Furthermore TBH I think the Pies prematured and still have a lot of improvement in their bottom to mid level dozen players and it is highly unlikely that both teams will have the same devastating injuries (particularly in game - going down in rotation) that they did this year.
As for wc they have an arguably underrated midfield, yes they are a transition team but are able to get on top of pressure mid teams like Coll, Rich and Melb.
As for the fixture, a lot seem to forget that the Pies this year beat a lot of in form teams - regardless of the opp ladder position with key injuries. Same wc still winning without NN and Gaff and in part Schuey, Kennedy and Darling.
Even though very different game styles they execute them very well, Coll very suffocating and then damaging on the transition wc surgical and precise in DE.
Pressure is still the new black and the likes of Dees, Pies and Tiges will still be contending. Likewise wc who know how to counteract those styles even though it almost brought them undone.
Risers:
Lions, North and possibly Freo
Sliders:
Cats, Swans and possibly hawks
Hey you could be right but Collingwood had a very easy fixture this year which gave them a leg up (like it did for the Tigers in 2017) into the finals. Everyone predicted Adelaide would be fighting off for the flag in 2018 after their GF berth the previous year too. History says that you need to take your opportunities when they are there and Collingwood did that to make the GF and West coast did that to win it. Both teams are far from guaranteed an automatic ticket into the same position again. Richmond easily beat Collingwood in the two home and away clashes last season but Collingwood used that to learn how to beat them in the finals. The same will happen now to the Pies and Eagles. It's how clubs evolve and why the three-peat teams of Brisbane and the Hawks were so special.
In the end we're all just guessing but I just think things will be far more difficult for both Grand Finalists in 2019 and teams such as Geelong & Hawks will slide. Once again though, just my opinion.