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Here's an practical idea, building on what teatine and HGsynth said.

Rather than getting the Erica Synths Bass Drum or Bassline, you can get any 'normal' VCO by Erica Synths, combine it with a envelope generator / modulator (NANO ARC, Make Noise Maths, others), an acid filter and a VCA to get the same result, but in this case you can also wire everything differently and get things you didn't think of when you were shopping for a bass drum. That's the area that Eurorack shines in, and it's difficult to do this with regular synths.