Mesh Subdivision Limit

Hi all,

I am trying to subdivide a mesh, which is thought to be a sort of tensile structure, into equal pieces, but I have an issue at the corners: the subdivision remains equal everywhere but going near the corners generates very small areas, which i want to avoid.

I am using lunchBox to get a diamond subdivision.

Is there the possibility to give a limit to the distance between the points or something like that? I am so newbie and almost completely lost!

Thanks

Vittorio