- UST Wincest where Sam and Dean both want each other but both resist going any further with it because they feel it's wrong/are in denial etc. No totally one-sided Wincest please, but I'm not fussed about whether the UST is actually resolved or not by the end of the fic.
- MPREG which comes across as plausible. It doesn't have to be Wincest, but I'd like it to involve at least either Sam or Dean, and to be pretty IC (in your opinion, anyway).
- Evil!Dean or dark!Dean fics where Sam isn't also evil/dark, preferably Wincest.
ETA: A number of MPREG recs now available in the comments!