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Regardless of the tech, what would (or wouldn't) attract you to attend?
E.g. Credentials of the instructor? Supported time to work on a self-directed project? 1 on 1 time? Etc.
Several clients I've worked for require visualisations not just for this reason, but as a way to increase confidence in the software. Sometimes that's the only reason for a few of them to exist at all. What do you think is going on here?