Scenarios are coming soon (as soon as the author (me) gets them done. Got delayed due to some real life issues).
As for 1:600; David pretty much head it on the head. The main issue is the area needed. Since the game uses actual scale, a hundred yards in 1:600 would be 6". So average engagement ranges (400-600 yards) would need at least 24"-36" (and more for sufficient maneuver room). That said, for one on one battles, 1:600 would be doable (and be a visual treat!). I'll see if we can get a set of gauges for 1:600 posted on the site this week. Stay tuned!
Just purchased PC a couple of days ago and love what I see. For quite some time I have been looking for an AoS rule-set that really appeals to me and deals specifically with single ship and small naval engagement actions. The weather gauge and all associated movement rules certainly intrigues me and looks Ingenious. I will be playing it for the first time this weekend with a couple of buddies and I am really looking forward to it.
By far my biggest interest is the one on one frigate battles and would love to use the 1:600 scale miniatures that I have made for this purpose. I am fortunate to have quite a large area on which to play that would easily accommodate this scale and was wondering if anything came about making a set of gauges for 1:600 for download.