All of the current universal enhancement trees are enhancing either spellcasters, ranged, or dagger users. We need a widespread melee tree, where your class does not matter.
Now, I was thinking about this for a little while. Could be pretty cool. It would give like a toggle on/off enhancement that turns you into a werewolf, much like druidic shape. It is just I thought so I did not delve into full details of it's different perks and pros/cons, but it could be a really fun new way to play, and to make melee more popular, as it is sort of falling behind with all the ranged and spell users I see now.