Yes, you should discuss the ideas.
Personally I was having an idea but was afraid to share and after working on that idea, without sharing for 4 months or more, I scrapped the whole project. I made lot of mistakes , that could be prevented
just by talking to my target audience and getting a suggestion from them. I based my decisions on hunches and my subjective opinions that was really wrong, So I will recommend you to share basic idea and get suggestions from audiences.