I don't like the idea of storing the different translations in one item's set of content revisions for several reasons:
- Malte's suggestion is a big change to the existing datamodel. Lots of code, including custom user code, would need to change. Lots of upgrade scripts written.
- People already claim the CR's too complex. This would make it more complex, adding fuel to their argument.
- I still want to investigate "non-versionable" content-items (item still linked to revision via live_revision and latest_revisions, but sharing the same acs_object row rather than having two objects - the default would be today's versional content item, so no existing client code would be broken). This would give us "lighter weight" content types for applications that don't need versioning, adding weight to the arguments of those of us who lobby for more usage of the CR.
- We should remember that the vast majority of sites are monolingual, not multilingual. Trade-offs, when necessary, shouldn't make the monolingual case more complex unless it is absolutely impossible to avoid because far more people are affected by this than the multilingual case.