Zachary,
If you want to showcase your rendering skills then present it as such. But if you present it in a “full project” format it will be evaluated as such.
Also, please don’t resort back to saying “it was just conceptual”. That’s a very common response when students are faced with criticism. It’s like asking the viewer to ignore 90% of the work and give feedback on only 10%. It will also not produce any useful feedback from the viewer or of your work.
If you want to explore angular shapes then choose a non ergonomic product (space ships, toasters, speakers, top housing of a drill, etc,)
Hope the comments helped.