ANYWAY, If we can please get back ON topic.
Are you're thinking of doing what I think you are thinking of doing? If so then I think it's a great idea and all, but you have to realize the kind of work and commitment it would take to do such an undertaking. We're not talking about just generating some datafiles for a MOD, you and your team would also be responsible for authoring the software engines that will USE those hexfiles.
Just to get an idea of what is involved with this kind of project I'd take a look at the Descent 1 & 2 sourcecode and (more importantly, since it comes in a fully compilable form) the Half-life source code. Just to see what those who have come before you have done.
Another thing I'd do is maybe talk with the people doing the "Babylon 5: I've Found Her" freeware game. I'm sure that'd they would have far more insight into this kind of project than anyone at this forum anyway.
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I told you that
It would be done by November, well, mostly anyway...