What is important, is that an LMS is chosen that actualy gets used. For each school there might be individual reasons to choose a specific LMS. Personally I am familiar with Chamilo and Moodle. But before making any choice, it would be a good practice to evaluate several LMS systems.
The mentioned Xerte Online Toolkits is NOT an LMS. It is a learningobject authoring tool and is designed to be used to create content for LMS systems. I don’t know any other authoring tools that give the options that Xerte gives.
I also think one of the things must be that the LMS is opensource.
When I look at http://alternativeto.net/software/moodle/?license=opensource&platform=online there is already a large list of options. Anyone knows more?
After investigating all options we can select a longlist and after defining a featurelist I think we should create a features matrix and after that a shortlist.
Maybe more than 1 option needs to be developed as a module, I don’t know. Lets hear all the possible options.
I was looking for an LMS matrix and found a rather extensive document that helps choosing an LMS: http://www.adlnet.gov/wp-content/uploads/2014/12/Choosing-an-LMS-1.pdf Maybe we can use this info.