I'd reccomend some modulation and a second sequencer for more patch variation. Something like the qubit octone would add variation to the mother sequencer. For modulation, maybe something like a Pam's new workout if you don't hate menus, or disting if you really don't hate menus. Maths is is hands on and really useful, but there are other dual function generators out there. I've been looking at the blue lantern spore generator and thinking it looks interesting. There's also the sin phi miasma, and the befaco rampage (sliders > knobs) . The ways to use these are endless, but the logic sections are great for creating quasi repeating phrases of cv that sort of sound the way you expect melodies to sound. Paired with a quantizer you can "play" the thing and get immediate musical results. Maths is great because you can attenuate those signals before you compare them, giving you a lot of control.