I'm not sure what you mean about the properties bar, if you mean the animation editor, it's more than equiped to handle this if you ask me, i'm assuming when you say loader you mean the import image dialog, but you saying the loader isn't equiped to do it is my very point, i'm suggesting that this be added. It's really a very simple idea
There is no need for a naming system, if you look at my suggestion i mentioned the idea, 'every X frames, create a new animation to keep importing into at the angle increment of Y degrees'
That means, it imports X amount of frames, then creates a new angle of Y degrees, then imports the next X amount of frames into the new angle etc etc
No naming necessary if it's told how many frames to make the next angle in, easy peasy
X and Y are obviously variables that the user tells the import dialog
for example, if i wanted a 10 frame animation spanning 16 directions i would tell the import dialog this:
Every 10 frames, create a new animation angle of 22.5 degrees
The import screen thingy would then start importing through the series of images that i had selected, creating a new angle every 10 frames.
Viola, all the work would be done!
I would really like to hear what the devs think of this idea because I believe it would streamline a lot of time consuming processes. Am I making myself clear about what i mean?