Good: playing with the drummer, playing melodic lines, keeping time, well maintained and good quality gear, turn up to practice and gigs on time, pay my way, lift the gear, drive, good at writing riffs / song composition, good stage presence.
Bad: often play too many notes, difficulty singing, often play too loud - too large of a rig (I transport it so why not) little knowledge of theory, don't speak my mind, think I'm better than what I actually am, buy too many nice straps.