How many people have pointless films saved as 'h' 
Been there done that. And "h" probably wiped out a better film with a great fight I REALLY wanted to save.
I label mine as I save them with date and info ie: "2-21 3x 109k4" meaning 3 kills in a 109K4 or "2-21 shiv 109k4" meaning Shiv killed me again while I was in a 109K4. I try to go through my films weekly so I remember a bit of what I wanted to look at in each film with that small amount of info. Even if they pile up for a few weeks I can puzzle out most of them.
I do something similar. But that still doesnt solve the problem. What if you fight shiv again and the details are all the same? Are you going to remember that you already have a film with that name or are you going to minimize AH to look through your files to see if you do? If you dont AH will overwrite that file unless you move them to a different folder.
I dont know about you, but I try to use the same format for the name. For example, I put the name of the plane I was flying first so that all my 38 films are grouped together. Then # of kills, etc. It doesnt take long for the details to start repeating themselves. Even if you pick a random name from the sortie, it is not unlikely that you will end up overwriting a film some time.
I dont really want to see the time date stamp in the name field. If it could be programmed so that AH (more likely windows) recognized files are NOT a duplicates just because it has the same name as the others, that would be ideal. But I think that is a function of windows file protocols (if thats what you would call it) which of course is out of our hands.
I think the only alternative is that AH uses the time/date instead of "film#." Then there is no way of overwriting films unless you wipe out the auto name to choose a different name. Plus all I would have to do is type a 38 3(kills) in front of the time/date and Im back in the air.
I know I could type in all these details myself, but like I said, I dont want to spend my play time naming files or have to go back and do it later. And even if I do it later, I have to move the files into a different folder so that AH doesnt overwrite them. It's a big PITA.