Meh, wands are for fairies (?) and conductors, and uses that shall not be named here, like the Hitachi version on youtube which I had never heard about before and now wish that I never did. Then again, maybe it's magic for some, who knows
Seriously though, and not at all for the Harry Potter connection, I'm pretty much against wands. They just seem too small to hold any significant amount of "the fabric of magic". They become magic holders without the weight (which I think should be reserved for rings and amulets of decent material quality) rather than a wooden twig. The staffs at least have some weight, a decent amount of wood, and/or a "head" which "holds the magic".
I'm not completely ruling it out, but I want a good explanation where the magic comes from and where it fits well (game) mechanically between a one handed staff and shooting through your fingers. It would have to be something that these two are not, something unique, but without appearing weird.
Wands were never originally like staves, in that they were imbued with magic.
Wands are a CHANNELING device, in old fantasy fare... a tool through which the inner powers of the wielder are amplified and enhanced, so that, upon the successful casting, are capable of yielding power much greater than what a sorcerer / mage / wizard could usually attain on his own. When coupled with a focus object of some sort, one would typically expect wand-wielding magisters to be capable of moving mountains (literally and metaphorically) should the need arise.
Staves, in these terms, came around after the advent of the staff as a -weapon-. Mages who often went into battle would use staves to channel magic through a WEAPON, where as a wand is a tool of spellcasting alone. Staves became very ceremonial afterwards, however, as wands had before them. In this sense, they became alike, as you would seldom take a ritual staff into battle... much as you wouldn't expect to see a warrior wielding a wand.
That isn't to say it couldn't be done... but one would have to be very confident in their abilities as a spellcaster to do so.