I remember that Steve and Sam (pretty sure it's Sam) own some sort of security/consulting firm born from the fact that when Steve was recuperating/bored out of his mind from being sick and cooped up he daydreamed about how he could rob a bank (or other business) across the street. And told Sam. Then they worked up a plan to show to the manager, and it turned into a career where they would find weaknesses of businesses and help them fix it. Obviously non-Avengers AU, and it might be skinny!steve, but I'm not certain.
Since I am Stucky trash, I am pretty sure it's Stucky, but I can literally remember nothing else except Steve made a career out of bored daydreaming about breaking into places.
Sound familiar to anyone?
I've been trying to locate these stories for over a week now and I just give up. They're older ones, before Ultron, but Tony is kind of the outsider in the first one. Tony is ill, having one of his bad days (or bad times) as Coulson and Fury refer to it when they find out, but he's keeping it from the team. After a battle, Tony doesn't stick around for debriefing, or a dressing down since he didn't strictly follow one of Cap's orders, instead flying immediately to the Tower. But once JARVIS takes the suit off him he collapses to the floor with that support gone. With the ARC reactor taking up so much space in his chest, Tony is partial to getting pneumonia 3-4 times a year, and this time it snuck up on him. When the team gets back to the tower, they see a woman carrying a canvas bag leaving and assume that Tony's hired a hooker while Pepper's not there. Fury informs then that the woman is a doctor and Tony is very sick.
The second story I'm trying to find is one where Clint (I think) falls through an inter-dimensional hole of some sort in Avengers Tower's AC ducts. (I'm pretty sure it's the tower, but it could be SHIELD HQ.) Tony has several cleaner bots (and making more all the time) in the ducts and a lot of them have come up missing. Clint discovers where they're off too and he gets sucked through or falls into the invisible portal into a space that can almost be described as landfill in space. Clint has to survive while the team has to find him and figure how to get him out.