"Fewer than 2% of champion concepts make it into the full game"
Source, Third Paragraph from the bottom.
So...how does this make everyone feel? Do you feel like your champion concepts now need more work? Do you feel that this is irrelevant as your ideas are worth attempting? Is this a wake-up call to you?
I wanna hear your thoughts...and maybe get a Rioter for some context if we're talking fully fleshed out champions with kits, lore, art, etc or if we're just dealing with a case of that "2%" being the concepts that make it out of the idea stage.

tee you that.