IDs vs base language string as ID is a common debate. I opted for translation IDs since Mozilla's Fluent (https://projectfluent.org/) uses translation IDs. I can't find their list of reasons. I do remember having problems myself by changing the base language string and thereby losing the connection to all translations.

The argument against IDs is the reduced readability. Something that can be solved with the IDE extension.

Is there something else that bothers you in localization pipelines?