It will be hard. Don't forget State of Origin. Melbourne have Cronk, Smith, Slater. Maybe not many but the loss of these players will have a big impact on the Storm.
Storm are a great team but they have been lucky a few times already this season. Its likely they will slip up at some time or another. Regardless I believe they will win the grand final.
I don't think the Waterhouses of this world could bear that. I'd rate them pretty good as many of their players don't show any signs of aging.
It would be nice but come Origin time the Storm will be vulnerable as they usually are. Losing the big 3 and possibly Hoffman will stretch there reserves to the limit. No doubt they are favs for the GF but I still rate the Bunnies and Chooks as dangers, not so much Manly.
Unfortunately yes unless main players get injured, pretty much a one team competition :/ as I see it