I would like to use multi and tartan bids in an SMP framework. This means that we need to find a way to bid 11-15HCP hands with short diamonds and 4441 or 5431 shape. Can we do better than opening them with 1♦, which changes the definition of 1♦ opening from "could be short" to "can be singelton" and the response structure to 1♦ needs to be changed as well. One idea could be to use a mini roman option (11-15HCP, 4441 any singelton) in multi. this overloads the multi 2♦, and the 5431 hands still need to be incorporated somewhere. Looking forward to suggestions from experienced SMP players.