Do you know of any Cap!Tony AU fics? I know of only two off the top of my head, but I adore the concept so much and hope there’s more out there where he’s the focus and not so much a plot device

Only a couple, but it is such a fun trope!

IF YOU AREN’T LEAVING COMMENTS AND KUDOS, TIME FOR A ROLE REVERSAL!

Vice Versa by @awesomeavocadolove: During an alien invasion, Tony is transported to an alternate universe where Steve is Iron Man and he is Captain America.Also, Captain Stark and CEO Steve Rogers are together on the sly. Awkward.

Find Yourself Some Truth (Carrying the Shield) by navaan:

The incursions left something behind: A block of ice with another Captain America inside of it – out of time and now of universe. But the greatest surprise might be that it’s not another Steve Rogers under the mask. Steve reaches out to Tony to help another Captain America through the worst of waking up, but not everything is as it seems.

festina lente (hurry slowly) by silverfoxflower: If anyone asked Steve – and a few reporters may well have, Steve wouldn’t know since Peggy had kept him from answering anything else outside controlled press conferences and faux-casual interviews – what his relationship was with Captain America, Steve would have said something like, “We’ve reached an understanding,” or, “He’s a good guy to have in a fight,” but nowhere in that statement would be the mention of friend, or partner or ally.A role reversal fic featuring Steve Rogers (a.k.a Iron Man) as a billionaire, genius engineer with a heart of gold and Tony Stark (a.k.a Captain America) as a playboy American Hero who spent most of his backpay on his flashy lifestyle.

Tony Stark–Captain America (series) by samptra:

Captain Tony Stark has found himself in a strange time and place. Billionaire, genius Steve Rogers has no idea what to do with a man from the past. Together perhaps they can teach each other a little about the past and future.

It’s Easy Being Me by snarkstark: “At least when I’m working, I’m doing something important! Not all of us have the luxury of being able to sit around all day in spandex and try and figure out how to use Google!” Tony yelled, eyes fiery.“You think that’s what I do? I have to work every second, not just hiding in the basement and playing with my toys.” Steve yelled back, frustrated with Tony’s refusal to listen and just behave.~Steve and Tony both think it would be easy to be one another, so Tony organises for them to be each other for a day. (not exactly a real role reversal, but interesting and fun!)

The Tower of Yesterday by manic_intent:
Tony is the WWII hero waking up in the future.  Iron Man Noir.