Most roadmaps have an “ideas” column and no graveyard. That is why they rot.
An idea that loses priority does not disappear. It waits. Then it comes back in the next planning cycle with better wording and worse timing. Someone remembers that a customer asked for it. Someone else remembers that leadership liked it. Nobody remembers why it was rejected.
The missing artifact is a trash can with receipts.
What to write down
When you kill a roadmap item, record three things:
- The reason. Not “not now.” The actual reason: wrong customer, weak revenue link, high support cost, dependency missing.
- The condition for revival. What would have to change for the idea to matter again?
- The owner of the no. A decision without an owner becomes a suggestion.
This is not process theater. It saves future meetings. A team that cannot remember its old noes has to relitigate them forever.
Roadmaps are not lists of things you might build. They are lists of bets you are willing to defend. The trash can is where you prove that sentence is true.