Connect-R is a relatively new service which acts as a market place for matching requests for improvements to R packages with developers who may be able to do so. There is also the option to crowd fund the development. I’ve started encouraging users of Rattle to add feature requests through Connect-R.
A number of new features have now been added to Rattle through the use of Connect-R with the developer receiving payment for so doing. The implementations were well done and I readily included them into the Rattle release code.