I don't look at it as reinventing the wheel, any more than one would consider the advent of new languages and technologies a reinvention. They're iterations on

I don't look at it as reinventing the wheel, any more than one would consider the advent of new languages and technologies a reinvention. They're iterations on the concept, bringing that concept into a new environment to be further refined or built upon. Other threads in this discussion bring up Finagle's shortcomings, partly due to certain features not being addressed or included by Finagle's authors due to them being low priority. In that case what you want may not already exist, but may work as inspiration for another incarnation.