I have updated the list of rules changes for NWOL-4. All the changes to naval combat that I have implemented so far are on it. See the list at
http://holf.org/NWOL/ruleschanges.html
It is also linked from the master rules page.
Things I will definitely do before the next PATE test:
1) Fleets in coastal waters blown to sea by storms more often
2) Ships entering chokepoints and finding enemy ships there must halt
3) Damage reduces evade chances
4) Find and fix the problems with ships that don't move finding enemy ships in sea areas
The first three are quickies; the fourth shouldn't take too long.
Things I might do before the next PATE test:
1) Tweak French military resources for naval play balance;
2) Add a Portuguese colony in Brazil (or as near as the map permits)
I'll do those before NWOL-4 if I don't get them in before the PATE test.
More news on the PATE test in the (I hope...) fairly near future. It is not yet clear how large this test will be. If it's large, it'll be open to the public. If it's not large (which I think is more likely) it may be by invitation only, but if so, we'll be sure to get some other game running that is open to the public (probably a ROTD game).
Steve