I have a use case where I basically want to use this package, but also be able to use <PublishTrimmed>True</PublishTrimmed>, <PublishSingleFile>true</PublishSingleFile>, and <TrimmerSingleWarn>false</TrimmerSingleWarn> and have no resulting warnings.
The issue? The way the package works it is not trim safe, I would suggest enabling these in a test project that uses Template.Parse(...).Render(...) to see the exact trim warnings that need to be resolved for full trim support without breaking the test application.