I have plenty of time for this sort of thing if you'll have me. This sea challenge that you speak of makes me nervous though. I have never been good at naval warfare...
And no, I doubt I can defend my title.
To clarify: the land challenge is Europe based. Difficulty range: 4-8, campaign length 90 years, set end time
the sea challenge starts Europe based, Difficulty range 2-10, campaign length max 150 years, bonus mission campaign length: no limit, but speed wins.
the sea challenge is an heavily edited save game, as such I'm concerned that some people won't know how to download and drag and drop it into their save games folder.
TBH, the AI is pretty crap at naval combat, so this is more about projecting large amounts of force far from home.
