Plus, there are entire categories of modules that can modify clock signals in various ways. You can count, divide, multiply and delay the pulses, add swing, shuffle, randomly skip pulses, alter the pulsewidth...and then, you've got Boolean logic, where you can take "normal" and "altered" pulses, slam 'em together, and get various other gate pulses out the other side. Logic modules are also super-useful for taking the gates from comparators and derivators, and using those as either "off" or "on" switches for more patch actions.
Tampering with clocking and gates works especially well with a second (third, etc) sequencer. For example, you could add one of Ladik's 4 hp 4-steppers, use that to change the tuning for the main sequencer, but only trigger the Ladik sequencer to shift steps when a certain combo of gates pass a logic gate.