A q3 style lightning gun could be usefully BUT its rater close the the machine gun. I would rather see the machine gun getting a slight boost in fire rate and decrease in damage, and see something original, or at least different from the other nexuiz guns, for the crylink.
A arching lightning gun would be interesting, but proly needs csqc for any kinda sensible implementation (well all lightning guns do i think)
A constant beam weapon that drains life from your target and gives a % of it back to you perhaps
