showcase means you have something to show us. An early screen, a model, a texture, a video of a cool code of code, trad sketchs.
WIP means that you have an idea and have started developing it already.
The prob is everyone would start posting their "I came up with an idea one night but haven't really got anything to show for it yet" if they treated showcase the same way.
This is more a morbius thread.

Soz for sounding a little rude, I just like to see work in showcase 1 and finished pieces ready for release in showcase 2, not just unformed thoughts.

Oh well I look forward to seeing a screen soon as if your project goes further I do like the concept