Still in early, rough stages... thoughts?

Interesting. (Not something I'd want to look at if I had a hangover!)
A couple of quick thoughts: The x and z need to be wider, and I think you might have better success with hanging numerals (plus they would match the lowercase alphabet better). For the 4, try matching the upper curve on the o (p,q,g). The arches also need to be refined, but I'm not entirely sure what to recommend. Play around a bit.
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