Iām a big fan of the SMR. One of my first modules and despite a lot of change in my rack, that one has stayed! By default it definitely has a signature chordal drone sound, but a very beautiful one at that. However, once you start exploring you can do some really wild stuff with it. I like feeding it with field recordings and gradually increasing the resonance to get chords. Itās also fun to feed the output of something like meadowphysics into the level CVs to get polyrhythmic arpeggios. You can feed it complex rhythmic audio and use it to generate interesting gate sequences based on analysing different parts of the spectrum. You can use the pitch CV outs to play chords on other modules and then shift around scales with a turn of the dial. (I use this with rings to get harp-like arpeggios.) Ive had some success using it as part of feedback patches too.
To be honest though, I do think of it more as a very unusual polyphonic voice and/or sequencer rather than an effect so you might want to bear that in mind!
I also have the mimeophon and like it a lot (although I wish the dry signal was less noisy!).
One think you might consider is a couple of distings. The new SD delay algorithms are incredible, giving you very precise and VERY long delay lines which are easy and simple to use. They also do everything else you could imagine too. I have three in my 6u 104hp case!
EDIT: also, the SMR pairs very nicely with Just Friends if you have that, since you can use each of JFās outputs to control a different band on the SMR.