Favoute fanfiction cliché/trope?

[lucre-noin.livejournal.com]

I am as curious as awlays and I was wondering what kind of fanfiction cliché/trope you prefer to read. I guess a cliché or a trope can be a certain situation that is used in more than a couple of fanfictions and that comes directly from situations from the different universes (comics, movies etc.)

For example, I have a special preference for the classic "Steve doesn't know that Tony is Iron Man" and I adore also the "Steve and Tony goes on dates but Tony doesn't know they are dating".

Comments

[mremre.livejournal.com]

My favorite is recognition/redemption, where misunderstood or actively hiding characters finally have their day. (In other fandoms, I would include Declassification in this category.)

In this fandom, this seems to translate into comics canon "Tony is Iron Man!" revelation fics. (I'd also count many of the Civil War fix-it fics, all things considered.)