So I had this idea for a necromancer class, maybe it's one way to represent the idea of the necromancer class
Class Feature: Undead Entourage
You have x number of undead dancing and walking along you. Some find this disgusting, you find it amusing or not find it anything special at all.
This group of undead give you access to powers with the PET description
A level 1 Undead Entourage has the following stats:
1 large minion, 10hp, x attack, AC, Will, Fort, Ref, etc.
(goes up with level, and every few levels you change the type of undead, from animal skeletons, to animal zombies, to human skeletons to human zombies, to ghouls to whatever)
Class Feature: Repair and Raise Undead
At any short-rest you may spend a healing surge but regain no HP. Instead you cure your undead entourage as if it had gained a healing surge.
If you have no undead entourage left. You may spend 2 healing surges to use some of your shrank remains to replenish it.
Class Ritual: Shrink Remains
The necromancer gains the following ritual without paying its GP cost
Shrink Remains
Time: 3 min
The remains of any number of creatures in a burst 6 shrink to a miniature size easily put into your spell component bag. They may be used now as components for repair and raise undead.
Cost: 50 GP
POWERS
Direct Undead
You direct your undead creatures
Power at will minor action PET, necromancy, arcane
Your entourage moves x squares
Undead Attack
Your undead attack the enemies
Power at will std action, PET, necromancy, arcane
Target: One creature
Effect: Make an attack with the entourage + your int bonus
MAKE COVER, PIECES OF DIRT!
You call your undead to act as a living (lol) wall for you
Power Daily Arcane PET Immediate Interrupt
One Ally at burst 6 of entourage
Effect: Entourage shifts 6 to said ally and provide him with +6 to defenses against one attack. Your Entourage loses 4 hp
BEHIND THEM
Your entourage divides and moves around a target in order to flank them
Power Encounter Move action PET arcane
Effect: Your entourage becomes 2 medium creatures with half the hp of the normal entourage but with the same stats. They then may shift 5 squares.
ENHANCE NECROMANCY
Your undead entourage provides you with more focal points to your next spells
Power Encounter Minor Action PET arcane implement necromancy
Personal
Effect: You receive a +4 power bonus to your next spell attack. Your entourage receives 2 hp damage
Obviously the numbers need to be adjusted but it's what I imagined