Spoilers for the season finale of Agents of SHIELD --
I feel like I should write "Fitz deals with his brain damage" fic, but I don't have the voice for him. It's totally a thing I'm going to be looking for, though I'm a bit afraid of what I'm going to find.
Plus, if he really has brain damage, you know Simmons will come up with something to reconnect the neurons in his brain or whatever and he's going to be back at her side. Though it would suck if he forgot that he loved her just when she figured it out.