Many seed files have a 2D model named "Default" and sometimes a corresponding 3D model named "Default-3D". But 3D seed files often have a single 3D model named "Default".
To avoid confusion between which Default model is used, it would helpful if the square or cube symbol was displayed so people know if the model is 2D or 3D when attaching.
Perhaps adding a column "2D/3D" corresponding to the Models dialog box would be nice.
Maybe they should add a tree option so the user can expand the dgn file and select the desired model at the first attach dialog rather then the second one
Ian