Just Swanstrom pointed me to the Mormon Pioneers project - and I like a lot the approach.
By ploughing through New Amsterdam related material, I realize that there are many angles. We have an opportunity here to pull together a massive repository for Northern American genealogy. However, we need a good and flexible structure - with a master project and consistently-named subprojects.
Let me have a go at it to give it a basic shape, but let's have an ongoing discussion on how we can make (and keep) this truly compelling.
I think the real scope is 'New Netherland' - but I think that New Amsterdam remains the best choice as something that symbolizes well the Dutch settlements. However, I think we need subprojects that cover the other settlement centers in New Netherland.
I have already provided a list of such settlements. In that context, we also need to analyze the 'patroonships'. I have found sources where the ownerships and roles in the patroonships and settlements are identified to people - which is excellent material for genealogy.
Anyway, a lot to do. Please feel free to add and modify and improve anything you want.
Last but not least, a simple scrutiny of Geni profiles shows that there are loads of duplicates and errors. Perhaps this project can lend a helping hand :-)