@nickgreenberg One way to accomplish this would be through a multi-input switch and a module that outputs static voltage/offsets (for instance, Noise Engineering's Lapsus Os, without any inputs plugged in). You could set each of the Lapsus Os channels to the correct voltages for your 4 sweet spots, route each of them to the switch, and then either trigger the switch using CV or by manually changing the channel.
Something like the Erica Synths Sequential Switch v2 would be nice for this, as you could select channels manually in "Piano" mode, or have it automatically sequence through the channels in one of it's many triggered modes (Forward, Backward, Random, etc.)
Keep in mind, the solution above only really works for sequencing one set of voltages, unless you mult the output of the Switch and further mangle/scale/mix them downstream before inputting them into your sound source's timbre inputs