For a grappling mod, i really think that tippy01.tbm should be considered. It is very similar to aikido.tbm, but brings a whole new aspect to the dojo.
Instead of your standard ground level dojo, you have a dynamic standing platform. You may be able to lift someone, but the ground may not be the most stable at first, giving your opponent valuable frames to try and re-establish their dominance.

Tippy01.tbm should be added to the poll.