Quote - 2.  OBJECT bloat.  For some reason, saved object files are considerably larger than most other modelers, but that normally makes no difference to your users.  I have no idea why it does this, nor do I care as long as the models are useful.

In hexagon that's easily fixed. It happens when multiple objects are saved into one, such as the V4 object.

Select an obj within the file (v4's hip or whatever), go to the selection menu and select all. Go to the tools menu and under Utilities, select merge duplicated UV's, then save the obj.