I think if they were to do anything, they should split the damage staves into their own categories instead of being all under the Destruction Staff umbrella, that way they can configure each of them into their own niche. Then they can have different skill lines that are all schools of magick.
After that, they should add an Unarmed skill line.
After THAT, they should add in a 1h melee + magick skill line so you can use those schools of magick I mentioned earlier in your off-hand.
Only then would I even consider a new staff.