Descendants of Casper Haldiman (Haldeman, Haldiman, Halterman, etc.)

There is so much information about Haldimans out there. The family is full of common names like Peter, Jacob and Christian in each generation, making it difficult to be sure who was born when and where, etc.
Would it be possible to arrange a meeting of "The Descendants of Casper Haldiman" and compare family lines, sources, stories, etc.?
I think that Lancaster, PA would be a good place because that seems to be where the first American Haldimans lived; but maybe a city with a more central location like in Missouri would be better for those of us spread all over the US.
What do all of you think?
-Christina