Tales and Chronicles
Jewel of the North, formerly know as vincegetorix
<---This.Bonded accuracy, fewer feats with tiny fiddly little bonuses.
Clean up all the feat taxes remaining after the above.
Change MC to allow power swapping if you have any MC feat, and introduce follow up MC feats that give you more of the second classes shtick.
You can use a given power more than once.
Each class has options built in to forgo encounter or daily powers in exchange for something simple and “always on”, or a simplistic power they can just use over and over.
Reduce monster HP and general HP and damage bloat.
Make implements more like weapons, with each having damage dice and other properties, so that using a wand is different from using a tome. Also put tome as an implement from the start.
Allow power scaling in place of higher level power swapping.
Just do this.
I myself would just remove Feats, instead going with:
Lvl 1: 2 at-wills, 1 encounter, 1 daily
lvl 2: Utility
lvl 3: Encounter
lvl 4: Skill power or Ancestry Power
lvl 5: Daily
lvl 6: Utility
lvl 7: Daily
You gain a number of Encounter and Daily uses equal to your Encounter or Daily powers ''known'', so you can use the same one if you want.
Reduce the number of classes, but allow each class to cover more than one role by selecting appropriate powers clearly identified by Role (ie: a Cleric could have a power list composed of cleric/avenger powers ).
Fighter (Fighter + Warlord powers + Knight/Slayer stances )
Rogue (more Controller power ala Knock Out or Blinding Barrage)
Wizard (Increase the damage of damage only powers, support powers from Artificer)
Cleric (Invoker + Cleric + Rune priest)
Bard (as-is, already a controller-leader)
Barbarian (Barb+ Berserker's stance + Warden + Thrown Seeker)
Ranger (Scout + Ranger + Hunter + Bow Seeker)
Paladin ( Paladin + Cavalier + Blackguard + Avenger)
Druid (Druid + Shaman + Protector + that other one from Essentials)
Warlock (Warlock + Hexblade + Binder)
Monk (Monk + Battlemind)
Psion (Psion + Ardent)
Assassin (Executioner at-wills + Shrouds + Assassin powers)
Swordmage (Swordmage + Bladesinger)
Give the weapon users ''stance'' at-wills ala Essentials to modify their Basic attacks to differentiate from the at-will powers of Implement users.