The CR2 can still be named Freak 4 or Hiro 4 to reflect the name of the figure it is meant to be. Being a clone of M4's cr2 that auto loads the morph has no bearing on that. You can load any cr2 into a scene and rename it whatever you want to rename it, and then save it back to the library and it will still load the same figure, with the same functionality, and keep the name you give it. I do this all the time with custom figures. 

 

As for the name numbering, it does make all the difference. ZBrush does the same thing. It changes the last number in the name of your file when there is a space between that number and the rest of the name. Many modeling programs do this. It helps with keeping track of file versions, but it can also be a hindrence at times. I tend to name my files with a date at the end, and if i'm not careful with my naming, i will get 2014, 2015, etc and it can screw up my archiving. And that is exactly what is happening here. Poser is changing the 4 in Michael 4's name to a 5 when there is already a Michael 4 in the scene, because of the space at the end of his name. It's not changing the 4 in Victoria4 because there is no space, so instead it is adding a space and a number sequence, which starts with 1 from the 2nd copy of Victoria4 that is loaded. Victoria4 and Victoria 4 are not the same names as far as poser is concerned. 

Whether this is proper etiquette for coders or not I can't say, as I'm not a coder. I'm just stating what I am observing.