I suggest stabjutsu original. I think it's like a new level of the same mod (ninjutsu). Some mods improve like it happened to wushu (wushu.tbm -> wushu3.tbm).

+I think the tournament room system should be a bit reworked. This belt restriction for bigger prizes thing is a good idea but those higher room are mostly empty. I think it would only work with abd at the moment which is considered to be the most competitive and a very popular mod at the moment. The most popular if we put together the greykido, aikido and abd fans