Seeing as how GWX 3.0 already has parts of OLC's environment mod built in, I'd say it's practically a given that there will not be much difference in the changes needed for a mod to be compatible with GWX 3.0 and OLC Gold.
Just promise that the night sky will be night, not just pitch black, and the horizon color will fit with that instead of glowing a bright blue as if the sun were on the verge of rising at any moment even though it's hours away.
I like that the "dark horizon" flaw was fixed with other env mods, allowing for an easier time to spot the smoke plume of vessels, especially at dawn and dusk, but having the horizon lit up like high noon when it's midnight is a real immersion killer.
At the other extreme, 16k nights in GWX 3.0 are so black that you can barely see the UZO when you're standing in the conning tower, let alone spot a warship or merchant running with no lights.
I think many are hoping your own ideas will produce results that are a happy medium that gives one the "feel" of night without the game-killing darkness of true night or the glaring horizon that makes one feel as if they're on some eternal dawn patrol.
Realism in a game only works if it has no serious hindrance to playing the game.
Looking forward to what you create, Hitman!
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