I started the SDC endeavor over here https://cubecobra.com/cube/list/mysdc with a mainly 'stock list' and need additional space to brainstorm ideas.

The power level is raised and the meaning of cards, both in hand and in library/graveyard, as a ressource has been emphasized quite a bit. There are a lot of cards that may be too powerful, but this will be (dis-)proven in playtesting.