I agree with a lot that Martin Owen says about technology, but again this is an argument that can be overplayed. There is a lot to be said about local customisation, there is a lot to be said for regional collaboration in developing resources, there is a lot to be said about providing some core materials on a national and even international basis. We need a balance. In fact this is precisely what happens with print-based materials. I speak as someone who provides such a team of experts, but who also encourages teachers to do it themselves when appropriate.
Technology is in a permanent state of being deskilled by developments in the domestic market.
Absurd not to take advantage of this, and let teachers create the video or computer equivalent of the photocopied handout, workbook, guide, etc, plus new ideas for interactive materials these media propose.