Seems ya have a dilemma.

1) Set the categories (trad, contemporary, singing w/o instruments, whatever)
2) Select judges who are familiar with the music they are judging (trad folks for trad; contemporary for contemporary, etc.)
3) Have the awards
4) Review the first awards night and streamline it for the second awards night

However, the vitriol and narrow mindedness of many people will obstruct what you want to do. IMO, keep them off your committees or they will turn a horse into a camel.