[tylermw]

The developing S7 object system (https://github.com/RConsortium/S7) is looking fairly promising in that it combines many of the nice properties of S3 and S4 (validation, multiple dispatch, sane constructors) while still being fairly simple and straightforward to use.

[northlondoner]

Excellent news. Quite promising, but R's power is its been actually functional natively. Even binary operations are functions, `+`(x,y) would work as in x+y