File Structure

Is the current file structure for our saved items going to be the final one?
The reason I ask is I found a way to inadvertently overwrite a model.
I created a platform "Mirage" set in 1978 and created a model called Mirage 1.3L
I then revised the platform set in 1982 to give it a face light (square lights and other 80's trappings) and saved it as Mirage 1982, however I created the updated 1.3L model from that platform and called it Mirage 1.3L (same as the 1978 version) and oh no! the 1978 version was overwritten.
I was wondering if perhaps models should be subfolders of the parent platform folder, but then I thought what happens to those models if I overwrite the platform.
OMG where did all these worms come from, where the can gone....
The reason I ask is I found a way to inadvertently overwrite a model.
I created a platform "Mirage" set in 1978 and created a model called Mirage 1.3L
I then revised the platform set in 1982 to give it a face light (square lights and other 80's trappings) and saved it as Mirage 1982, however I created the updated 1.3L model from that platform and called it Mirage 1.3L (same as the 1978 version) and oh no! the 1978 version was overwritten.

I was wondering if perhaps models should be subfolders of the parent platform folder, but then I thought what happens to those models if I overwrite the platform.
OMG where did all these worms come from, where the can gone....