You have found the issues in Poser of identifying a figure. For your own use you could edit the cr2 and put in a meaningful name.  

The geometry file name will tell you some things but V4, A4, etc will show the same geometry file since they are essentially morphs of v4.  You can look for specific morphs or materials but thats a bit hit-or-miss if you have characters.  

You can add code to treat the None entry as an error and ask again for a valid selection but thats all.  You can use tkinter and create a list for selection but thats a lot harder in my opinion.