[bluesign]

Consistency and logic comes with a price. But i guess both approches have cons and pros.

[coldtea]

The best way I think is: start with either, and prune what has been shown not to work in a version n+1 every few years iteratively.

Provide a good migration path (e.g. for a language that could be a n to n+1 transpiler), and you're set.