I get this comment on ADI while reading Essential C# 4.0:
Unfortunately, the underlying technology used by the asynchronous delegate invocation pattern is an end-of-further-development technology for distributed programming known as remoting. And although Microsoft still supports the use of asynchronous delegate invocation and it will continue to function as it does today for the foreseeable future, the performance characteristics are suboptimal given other approaches—namely Thread, ThreadPool, and TPL. Therefore, developers should tend to favor one of these alternatives rather than implementing new development using the asynchronous delegate invocation API. Further discussion of the pattern is included in the Advanced Topic text that follows so that developers who encounter it will understand how it works.
So are there any limitations that ADI has and TPL doesn't, besides that TPL probably uses a not-end-of-further-development-yet technology?