I dunno when the etiquette changed tbh, but no it is not considered rude to roll Need on crap gear. People used to be very strict about when you were and were not allowed to roll Need. But that's just the way the community dynamic has changed now. It was an unspoken rule of courtesy, and it was thrown out the window sometime last year. I will mention that if someone specifically asked for an item at the beginning of the dungeon, or if (for example) I was in a low level dungeon with a Sprout caster, and I was rolling Need on gear that the poor newbie BLM could actually use, THAT would be very rude, and I think that at least should be avoided when possible.
