Cheers. The big guy is my favourite of the current Nurgle range too. I did consider removing the shoulder spikes, but I think they help visually balance the massive axe so left them. I trimmed the very ends off though - like a lot of current GW plastic, they were needlessly pointy and fragile. I did remove the skull tied at his waist too as it didn't really bring much to the party.
I'm tempted by the similar Putrid Blightkings, as I'd like to fiddle around getting the best combinations of parts, but I think they'd diminish the impact of this guy. It's a shame the Blightking set isn't a bit more varied in body shape and size.
The final three champions will be the two Jes Goodwin Nurgle champs from 2001-ish and an old Chaos Sorcerer, Stabb the Acolyte. They all fit in quite nicely, though the 2001 champs are a bit more finely detailed than both the old champions and the newer plastic guy.