I like that it has been developed by different groups, so there are several models available to use in order of difficulty (the model I'm using now was made by my university). The interface could be more intuitive for newbies; maybe some tutorials or videos would help? It's easy enough if you know what your doing but still requires learning time from someone who knows how things work inside out. So far we haven't had any problems implementing this software into our departmental projects. We're looking forward trying other applications as well!