I shamelessly stole this awesome schematic
from a member on here (P-J, I believe? Can't quite remember), and used it as a base for planning my control schematics.
Credit where it's due... It helped me wrap my head around what it is I need my system to do, and made my planning incredibly easier. Thanks!
Anyways, here it is. I'm building a single-vessel Brew-in-a-Basket system, with a single LG pump, and a RIMS tube for on-demand heated sparge water. I plan on using a single PID to control both the RIMS element, and the kettle element... Each with it's own RTD temp sensor. I've incorporated a 4PDT center-off switch to control which element/sensor combo I use for a given step in the brewing process.