ArenaNet:Guild Wars 2 suggestions/arrows as a offhand

I taught it would be interesting and more realistic if the rangers could have arrows as a "offhand" it would be realy cool if there were different kind of arrows like at the beginning you could have just wooden arrows and than iron, silver... arrows. irons arrows should do more DMG then the wooden arrows, but less then the silver ones and so on.... And arrows should have diferent looks.

Why this is a good idea :

- more realistic

- more "wepons"

Why it may not work out

- there are skills like Glass Arrows and this can be a problem