You see on a lot of card of the day/card specific discussions, or even Villian specific discussions, people mentioning about how certain cards do very well against certain encounters and such. But how often are community members actually doing this?

On MCDB you can clearly see that popular decks are still always tailored to being general use and are directed as being effective against as many scenarios as possible. Not that there is anything wrong with this in itself if that's what the community is interested in, just remarking on it as a trend. This deviates the most it seems when discussion or lists pops up that connect to Solo Champions League or something similar, but this usually blows past the realm of tech choices since building for those specific scenarios is the entire point.

So, how often do you guys do this? How often do you change your decks specifically to put in 1-6 cards that are really good for this particular challenge?