Goals of this ticket are to:
ExamplePluginby default, to somehow prevent these dimensions from being added to any user unless they specifically activate ExamplePlugin plugin?
Reason the code was "removed" in the first place:
These files and tests were removed in 2.5.0 as otherwise the
ExamplePlugin was creating new dimensions in log_visit, log_conversion etc. which would cause trouble to power users with large databases.
See also: #5806
We should imho find a solution before 2.5.0 release. I thought you want to remove it only for the first beta release. For instance Dimension and Report generator is broken now which is already documented in Getting started guides on developer.piwik.org.
@tsteur sounds even better before 2.5.0 but unfortunately I don't have time. Feel free to move it to 2.5.0 if you can find time for it!