It seems two problems were merging in my mind (which is currently overdosed with antibiotics)

• writing CPAN modules which work on older Perl versions (like - as an extreme case - those notoriously antique Perls on AIX )
• compatibility of Try::Tiny code after the new try-catch feature leaves the experimental phase.

The new try-catch has obvious and subtle incompatibilities to Try::Tiny, like the explicit catch ($e) argument.

First case may need to called differently, probably "Old-Compatibility" ... (I'm eager to learn about a proper naming).

The sheer number of modules already using Try::Tiny according to hippo make the second case a real "Backwards-Compatibility" issue. Because at some point a feature should become a default.