What is a gimmick?
What is the point of a gimmick? What does this word even mean?
Typically this word is used to describe something out of ordinary, but usually unimportant. Something extra.
Features you create just for yourself are a gimmick. Features that many people use are not a gimmick.
At which point a gimmick ceases to exist and becomes something more?
Well, this would imply every grand thing was a gimmick at first — for niche audience. But some features for niche audience are very important and useful, in healthcare, for example. We wouldn’t call them gimmicks.
So I suppose a gimmick is something that is both unimportant and niche.
Like a hobby.