Right now, we have very few tags that connect ideas together between different series, aside from the medium in which they appear.
An example of this would be Magic. ftl-drives, time-travel, to name a few of the more popular ones. But it would be nice to see more of these. Should we make a concerted effort to try and tie in questions among different series, and use more of the tags?
Please, if you think this should be done, give a few examples of some tags that might make interesting connections.