Well yeah, I suppose that bringing an event unit into a discussion about premium units and RNG wasn't really appropriate, but it was simply to illustrate that I'm pining over a free unit more than something significantly more rare and potentially expensive.
Apples to pears aside, in a perfect world, I'd love a varied ramp roster too. But I also accept that it's unlikely to happen, nor does it matter enough to me to throw $ at DMM for the shot at it. So by my standards, having dupes of blacks or plats is more unlucky than lucky (Although still more lucky than getting your 6th Conrad or Betty...) It just so happens that Lisse Lotte is the one unit I wouldn't mind having more of, because as you said, she's easier to SU and mincost than someone like Jerome or Zenobia, and ultimately performs better because of it.