I'll cast a vote for Nbd2.
d5 doesn't really do anything worthwhile, and it's more important to get the knight to where it needs to be while we have time so we don't have to worry about blocking the bishop and the queen later. The queen and bishop don't have any responsibilities or opportunities right now, so getting the knight into the game is ideal.
When does the voting period end? The current vote count is 8-7 in favor of Nbd2.
