its really great to see how the midihub effects have developed in such a creative way since this post was created - top job 
since this post, Ive also added a Squarp Hermod for Eurorack to my setup,
it has very similar effects to the Pyramid, but a couple of extras
https://squarp.net/hermod_effect
one that I really like, that could be applicable to midihub … is the Euclidean FX.
(Euclidean are a sequencer in Pyramid , but an FX on the Hermod)
Euclidean generators are really fun, and could be nice as a generator on the midihub,
but the Hermod has a nice ‘twist’ being an effect.
what it does, is have a 'standard euclid sequencer ’ running, it then kind of ‘ands’ it with the midi stream, so it uses the notes from the midi stream and also only triggers if the gate is high on both the euclid and the stream…
hmm, difficult to explain - but the result musically is, you get the euclidean rhythm but the notes are coming from the midi stream.