There are so many considerations when trying to design instruction with multimedia. You have to take into account the materials that your students have access to, method of distribution, design principles, and that does not even include the design of the actual curriculum!
My current philosophy is that less is more. Just because I have all of this new software available to me as an instructional designer, it is not necessarily to the benefit of my students to use them all. I cannot stress enough the importance of analyzing your audience, and if you don’t know your immediate audience, anticipating what their needs may be. I also have constraints due to the state institution and software licenses my work imposes.
I think that designing instruction is not different from a constructionist perspective. Once distributed, the student has to take the time to process all of the media and construct knowledge from this one-way distribution. If the media is all that the instruction entails, they do not have the benefit of face-to-face and two-way knowledge share with the instructor. They must process the media on their own and come to their own conclusions and hopefully, create knowledge.