Yes, managing webaudio nodes is pretty hellish. If you're interested I maintain a small library for abstracting them - basically you pass the library an object describing what oscillators and filters you want, and what timing envelopes you want attached to their params, and then the library creates and destroys everything. It has no concept of plugins or processing, but it makes it convenient to play around with arbitrary configurations of basic nodes.

The library is here: https://github.com/fenomas/wasgen