Originally Posted by Fat TAY
In this thread, it is simply a shorter way of saying "A non-standard moveset, ability, item, or EV spread which is designed to deal with a specific threat or set of threats".
Does this mean that a gimmick set, when it becomes a standard set, is no longer a gimmick set? I'm not trying to argue with the definition. What captured my attention is that the Sub / Toxic Heatran has become very popular and has gained mentioned on analysis - it has become a standard set.
The same could be said for other "gimmicks" like Scarf Lead Mewtwo in Ubers - it was designed to take down lead Scarf Darkrai and Deoxys-E - it is currently one of the most popular, if not the most, Mewtwo sets.