I'm currently trying to reference all 3DS homebrew on the Wiki.
seeing as it's only a line change each time, I think it all belong to the same homebrew and will be listed as a "mod" or a "different rendering model".
Maybe you could (or should) even add a user input function to switch the rendering engine and update the same homebrew project instead of creating multiple .3dsx files with only one different line.
Well, You do like you want of course, but I think they are all based on the same model (fractal display) and should be part of the same homebrew. It will be easier for the user to test them all if he only has to put a single file on his SD card and press a button to switch the fractal type.