IDEA ONE:
Run the OP .exe on an EAW D2 framework. I know this may be impossible, but until someone shows it can't be done, I think it's worth considering. The OP tactical engine is (or will be with a possible OP patch release rumored) very solid. The AIs are pretty good, considering they are still AIs. The systems work well. There are plenty of ships and weapons to choose from. The core of the game is pretty solid. It's the shell, the D2 environment, that is lacking.
If possible, an EAW D2 map (no cartel layer) and serverkit running either OP missions or custom missions would have the benefits of the EAW stability and working features AND the benefits of OP's tactical environment, weapons, and specs. Pirates don't need a map layer, because they can resupply or purchase ships at any base, regardless of ownership. This would make them possible non-factors on the strategic map (though maybe they could still hurt enemy empires without capturing territory), but they would be more like pirates, working in any area they want, running and using the black market, preying upon weak convoys and imperial ships, and generally causing headaches for the imperial navies which have to also deal with enemy empires. If their ship production is low, so be it -- they are pirates, after all.
Where are the problems with this model? First, the EAW D2 kits probably can't work with the OP .exe. Then again, has it been tried? Second, an EAW kit probably can't use OP missions, or at least those missions wouldn't send back the right data to update the server DB. If that's a sticking point, new missions could be created to replace them. Third, such a hybrid D2 setup may not be recognized by the server list hosts. How would anyone be able to access such a server even if it could be made to work? Fourth, the kits may not be able to handle the OP ship specs. Again, we can't be sure until the whole setup has been tinkered with and attempted.
I think the talents exhibited by the members of this community may be able to overcome these limitations. It is certainly worth a try.
------------------------------------------------------------------
IDEA TWO:
Code new OP missions that instruct the OP D2 serverkit to update the map correctly. This is definitely not a new idea, but nobody has really been able to complete this task, at least that I've seen. A number of talented mission coders have worked within the EAW API to create custom missions, but the OP API has gone largely unused. If the missions could update the OP D2 DB correctly, neutral coop should be possible, hex DV boosts and losses should occur correctly, and players should no longer draft allies as enemies in some missions.
The trouble with this approach is that we must still rely upon an OP D2 that has serious issues. Perhaps new missions would circumvent or ignore some of these problems.
------------------------------------------------------------------
It's time to weigh in with ideas, time, and skill. What do YOU have to contribute?