There is no way at the moment to check the changes between 2 models of the same structure. Along the life of a project, small design changes cause the checker of a model to review all of it in case that there has been an accidental modification of other part of the structure than the intended. It is a very laborious and error prone process to check 2 versions of the same structure, a plugin to compare 2 close models would save many hours of time.
