For the record the options available to Wizards in 4E are:
Tome
Staff
Wand
Orb
Nethermancer
Necromancer
Evoker
Pyromancer
Illusionist
Enchantment
They don't need more options. It's time to leave the Wizard alone. It really is. If you can't find something awesome to play out of that, you would never be satisfied with anything.
Warlocks, Sorcerers, Invokers are just more "wizards" with different mechanics.
And just to take a look at another offender in that department, here is a quick list of options for Fighter:
Heavy Blade
Light Blade
Spear
Hammer
Axe
Guardian
Greatweapon
Tempest
Battlerager
Brawler
Arena
Knight (Shield, Quarterstaff, Feywild)
Slayer
Weaponmaster (maybe this is a reprint of one/two handed weapon talent)
Players just like fighters and wizards that much. Designers probably see how frequently these two classes get played, and keep publishing more material for them.