Roadmap

It would be really cool to have a "Summer of NHibernate" like webcast series where you start with a new project and build on it using NServiceBus. Start slow and explain the decision process. Have it grow into a full fledged sample project and provide the source code at each step. I believe this would help a lot of beginners and could act as a great source of documentation.

I don't like building new solutions on top of closed-source proprietary implementations and protocols. I noticed that amqp or any of the implementations are not on the todo list when I think it should be at the very top. Pub/Sub messaging is best left up to the broker/infrastructure. It would also nServiceBus a lot of value if it could be run completely on *nix os's.

add this serialization to the bus! ;)

NServiceBus would be even more valuable if it could be used on Windows Mobile devices using Compact Framework as a first-class citizen, allowing mobile devices to publish messages and act as receiving service endpoints. Windows Mobile does support a compact version of MSMQ.

In a similar vein, Silverlight support would be great. The .NET subset in Silverlight and Compact Framework is pretty close.

Outisde of Windows Azure (running on a normal machine), sending to an Azure queue. But also within a Web or Worker Role in Azure, where MSMQ would not be necessary and might not work... (not sure about this detail).