Fanfiction turn-ons: Heroes edition

Because I'm all about the balance, here's the post about what sure-fire good buttons I've found in my three quarters of a year Heroes fanfiction reading. I'll try to avoid the glaringly obvious (i.e. most of us are rather keen on good spelling and characterisation that fits with their idea of what the source provides, etc.).

( The list, with very vague spoilers for both seasons )