A longbow with an 'arcane archerer' theme would be fantastic! Especially since a high pure-crit long ranged 'elite spec' isn't a thing yet. It'd be properly different from tempest and weaver. A higher focus on mobility for blinking around and the like might be neat too, with more soft-cc focused attacks on the longbow attunements to help keep the enemy at range. (And to differentiate it from the staff which is a bit more aoe/support focused.) However, I did vote for a rifle purely because I want to see some type of Napoleonic light-armored rifle-user. I have no clue how it would work though. My original idea was to give it shouts so it could be like a rifle wielding field commander shouting orders in their brightly colored fancy coats. But tempest has shouts and that's as far as I got there. Arenanet is incredibly creative when they do set their minds to things though, and I would absolutely love to see them take 'elementalist rifle' and see what happens.