Depending on your rotation (how many pipes you smoke in rotation) this one might go for several years or more.
It's your call. Topping would make it look better and might make it more appetizing. Since you liked it well
enough to buy it, I don't think you have to throw it out. If it smokes pretty well, you could just smoke it and
eventually use it up. No harm in that. When I actually wear out a shirt, say, instead of taking it to Goodwill,
I feel I've had a good experience, wanting to use it that long.