There's a few inconsistencies with that calendar. For a start, the classic series TARDISes all have a Doctor in the doorway, while the new series TARDISes don't. What could that mean? (Nothing, probably.)
McGann and Hurt are lumped together without a TARDIS or a monster. Is it because the War Doctor will return as a villain? Or maybe he's a TARDIS? Or a villainous/monstrous TARDIS? Or is it just that 13 Doctors don't go into 12 months?
Tennant's "monster" is an Ood, which is only monstrous when manipulated.
"I love humans. Always seeing patterns in things that aren't there."