If you’re having fun with VCV Sound Stage, I just realized something that makes it into a different beast:
Use the 1/2 inputs and outputs as a stereo effect. Then hook the 3/4 outputs to the 3/4 inputs, and you have a feedback path that mixes the modeled room sound. You can put other processing inline as well - a stereo delay sounds cool.
Oh and be sure to randomly modulate the positions of the sound source.