Per - definitely potential here.

Maybe WWFT (Mike Cina) could
distribute something like this...

Liking alot: the numerals, the R, S, N.

Not liking: , the cramped setting + the E, F, G.
On those three glyphs, you might break away from
the structure like you did on the N. Overall,
you might jazz up the glyphs a bit, look for
some other non-traditional solutions.

What's the significance of the name...or is it a mystery.*

bj

*badpun*sorryitslate

What i did change:
* Less cramped setting
* E F G, but didn't come up with a superb solution, rather just a possible variation.

Yes, the names is pure mystery. It actually tells a little story about our winged little friend, the sparrow, that

>where the lower part were thinner than the
>higher part of the letters.

What about that? I think that would be more interesting. Keep the monostroke version, but try doing this different stroke weight distribution.
And, BTW, what's that under 5? Looks like a half-smiley... :- )