An answer to this question will serve as the table of contents published at the start of the 2013 Mi Yodeya haggadah supplement.
I'm populating the table of contents initially but it will be updated as questions are added/removed. Any posts listed in this table of contents must first be an answer to one of these questions (and formatted like the rest):
- Haggadah call for submissions: part 1 (up to Magid)
- Haggadah call for submissions: part 2 (Magid)
- Haggadah call for submissions: part 3 (Rochtzah through Shulchan Orech)
- Haggadah call for submissions: part 4 (Tzafun through end)
You can copy Hebrew section titles from this online Hagada text.