Processes are isolated by design. Context switching are very lightweight. The processes by design cannot damage each other. - Joe Armstrong

Your first question must always be: what is the most difficult part of this problem that I am trying to solve and then try and solve that. If you can't solve the most difficult bit, give up! Seek advice, find somebody who can solve it!

If I want to make a programming language, I would not make a programming language, I would make a protocol description language where you can formally describe protocols and you can formally validate the components are obeying the protocol. I put these between everything that communicates in a form of a contract and I would not like to serve contract violations.

The nice thing about pipeline is that quite easy to see and you can do all the steps in the pipeline in parallel.