@ArthurGeddon All the fun in modular is in experimentation ;) But how about you start with this: The Beatstep provides Gate and Pitch information to your synth voice (Brains through Mr. Philter, for example). It triggers the envelope of the Mr. Philter and the envelope opens the filter section. Now, how about you also patch the Gate from the Beatstep to the trigger input of the 182 Sequencer (through the multiple in your top row). Patch the envelope output from the Philter into a VCA channel on the Four Play and the CV1 output from the 182 into the corresponding CV input on the Four Play. Then patch the output of that channel into the filter section on Mr. Philter.
The 182 now controls how much the envelope opens the filter on each step. You can create accents and emphasize certain notes, which makes a sequence much more interesting. Think of the Beatstep as your basic Pitch/Gate information and the 182 as the "spice" you add by sequencing parameters that shape the timbre of your sound or modify the way the basic sequence is transmitted to your sound sources.