I'm a strong believer in 'showing them something different, but I put more emphasis on on other things. As an example, my favorite body of water is less than 100 acres and the two most often used lures are plastic worms and lip less cranks. To be more specific, green pumpkin worms and chrome Rat-L-Traps. I use those two baits over 50% of the time, but I'm still showing them something different. The difference is my presentation and differences in the bait itself.
By going larger,or smaller, offering something with a different action (Red Eye Shad, or a paddle tail worm). or just a difference in presentation (different speed, or angle of presentation, swimming vs. dragging, pumping the rod vs. reeling it back steady), I'm showing them something different.
As for natural vs. unique, I opt for natural to start and if I determine that the fish are aggressive (active) I'll switch to something different. That's when I want my offering to stand out the most.
Bass don't have long term memory, but the do, instinctively avoid repeated, negative responses.
A fish that's been caught on a rattling crank a few times in a short period, will avoid one because of the repeated negative experience. Similar to a fish that's inhaled a falling leaf a few times. After that it will ignore them because nothing positive resulted from previous attempts.