The using of transparent layers as a tool is not the problem. Rather how you use it, for what and how you control the result. If you use them, for example, as a shortcut technique to make things that are achievable by hand much faster, than sure. Otherwise we would have to forbid use of bucket tool and accept only single pixel pencil placement :) But if you stack many add semi transparent layers so you get an astronomical amount of colours you have no control over, than no it would not be the old PJ way. However if you can for example index the palette after such practice, and regain control over it, than the process of how you got there interests no one. The final result is what always matters the most. 

I re-read the rules, and I also have a bunch of transparent layers 
Maybe I'll just table this one.

Ah, that's a shame. I could very quickly change the blurs into bands.

Of I love it, and I love classic follout games. I would be pleased to have this in the PJ gallery, but unfortunately PJ does not collect artworks with blur effects. Would you be able to get to the file with a vanilla pixel art only? You are allowed to add the link to an enchanted pixel art in your description (if you store it somewhere else, for example Lospec or other online galleries with less specialization). This way we woudl be happy to have your wonderful animation here, and you would still present your artwork in your desired full glory to PJ users.