I guess where you play dexxers don't spam disarm on your mage weap in the field. My mages haven't carried a mage weap in months now for this very reason.
The only thing about Disarm, is what do people do when they get disarmed? They run.
Melee is on the underpowered side imo, (unless they have DP) & wrestling is not 100% useless, But its only good against people who can disarm, otherwise wrestling does exactly the same thing a - mage weapon would do (except with a weapon you can get more dci & deal melee damage), and until you can get a better variety of properties on spellbooks, this is going to remain the same as well.
Stun Punch & Disarm (Wrestling) are Semi useful, but you have to make a choice as *not cast, and HOPE your wrestling hits* and resume spell damage at this point, OR *not cast, and Miss* and your target has the opportunity to get 1-2 heals or 1 Gheal off. (assuming your fighting another mage)
Weapon skill mages have been made nearly obsolete since the tactics/spell-spec change has been added. and unless the casting-with-specs gets turned back on, they will be extremely rare to see.
Pvm-Mages, If you could hold a slayer spellbook & a slayer weapon at the sametime, i could see a mage with a weapon skill being useful in pvm... But you can't so a dexer is better off, if you prefer melee dps vs spell dps.