Most tropes are obviously either present or absent in a work, and can be added to a work page immediately after the work is released. Others, particularly Audience Reactions, tropes that involve the passage of real-world time, and those that span a large number of installments, can take a little bit to be sure that they apply. See also: Speculative Troping.
The following is a list of tropes and Audience Reactions that, for one reason or another, have a formal, mandatory waiting period before examples may be added to work pages, YMMV pages, or the main trope page.
Even where no formal mandatory waiting period is in place, before adding an example of an Audience Reaction, it's a good rule of thumb to ask oneself: "Will this still be relevant in a year? In a month? In a week?" If the answer is "no" or even, "I'm not sure," maybe hold off a little while and see what happens. Fan reaction can often be knee-jerk. It takes time for fan and critical consensus to form. Controversies that burn brightly often burn out quickly. Attempting to catalog every flash-in-pan Audience Reaction often results in pages that are cluttered and/or overly complain-y.
Not to be confused with Examples Are Not Recent, which is about why examples and descriptions should not have the word "recent" in reference to episodes, events, etc.
Note: Entries on this list have been agreed upon by consensus in this thread. Do not add or delete them without first reaching consensus there.
If not mentioned otherwise, the time listed is the mandatory waiting time after the work, or the relevant part(s) of the work, is released. For Real Life events, it is the waiting period after the event in question occurs or ends.
Pages with a mandatory waiting period:
- Apparently Powerless Puppetmaster (20 years after the person leaves office): Avoiding ROCEJ problems over incumbent or other recent politicians.
- Base-Breaking Character (6 months after the character is introduced or becomes controversial, whichever comes later): Due to being a magnet for knee-jerk reactions whenever a character is disliked by any portion of the fanbase. Cleanup thread here.
- Box Office Bomb (No films that have not finished their initial theatrical runs): It's impossible to tell whether a film can qualify while it's still in theaters, since some movies take longer to recoup their budgets than others.
- Broken Base (6 months after release or the issue becomes divisive, whichever comes later): Due to being misused for any disagreement within a fanbase, no matter how minor or short-lived. Cleanup thread here.
- Complete Monster (2 weeks): Due to frequent misuse; the waiting period allows more people to experience the work so that consensus may be reached on newer examples. Cleanup thread here.
- Condemned by History (5 years): Enacted per TRS discussion. We cannot determine whether or not something from recent times will go from being loved to being reviled.
- Contested Sequel (6 months): Due to being a Sub-Trope of Broken Base.
- Creator's Pet (6 months after the character is introduced): Due to having The Scrappy as a prerequisite.
- Critical Dissonance (1 month or the end of the season/theatrical run, whichever is later): Due to being a magnet for shoehorned early reactions, often based on pre-release hype.
- Fair for Its Day (20 years): An extended period of time is required for culture to change enough to make this possible.
- Franchise Killer (5 years or official confirmation): In absence of confirmation, an extended period of inactivity is required to prove it "dead".
- Genre-Killer: (10 years): Per TRS decision, in order to avoid knee-jerk reactions to recently failed pieces of media.
- Genre Turning Point (10 years): To avoid knee-jerk reactions and allow time to prove that the genre has indeed changed.
- Hindsight Tropes (Varies): The event causing the change in hindsight must be over. Cleanup thread here.
- Magnificent Bastard (2 weeks): Due to frequent misuse; the waiting period allows more people to experience the work so that consensus may be reached on newer examples. Cleanup thread here.
- NeverLiveItDown.Real Life (25 years): Due to being a magnet for agenda-based editing. Waiting period implemented so that it can be conclusively shown that the example, in fact, never did live it down.
- NeverLiveItDown.Sports (10 months): Similar to the Real Life section, though it takes much less time to become conclusive.
- One-Hit Wonder (5 years or artist's retirement/disbandment): Due to knee-jerk reactions to a succeeding work flopping.
- Oppressive States of America (No Real Life Examples past the Civil Rights Movement of the 1960s): Due to concerns around the Rule of Cautious Editing Judgement.
- Overshadowed by Controversy (6 months after the work is released or becomes controversial, whichever comes later): Controversies often burn bright and then flare out, meaning that controversies that seemed important around release time can be forgotten before too long. Cleanup thread here.
- Posthumous Popularity Potential (6 months after the creator dies): To avoid knee-jerk reactions.
- The Scrappy (6 months after the character is introduced or becomes hated, whichever comes later): Waiting period introduced due to constant misuse and character-bashing. Cleanup thread here.
- "So X, It's X" tropes (1 month after initial release, to prevent knee-jerk reactions.)
- Two-Hit Wonder (5 years after the second "hit" or artist's retirement/disbandment): Due to knee-jerk reactions to a succeeding work flopping.
- Unintentional Period Piece (10 years or exceptional circumstances): Generally takes at least ten years to determine what the period-piece hallmarks of a given time period are. Cleanup thread here.
- Values Tropes: 20 years after a work's initial release if it's about the dissonance/resonance between different time periods. Examples discussing the dissonance/resonance between different cultures do not require a waiting period. Cleanup thread here.
- Win Back the Crowd (1 week): Was attracting knee-jerk reactions from people who hadn't experienced the work based solely on pre-release hype.
- WrittenByTheWinners.Real Life (200 years): To minimize the potential of political edit warring. Note that this restriction had already been in place for several years before it was discussed in the NREP thread.