Ok, One of my biggest peeves is Necromancers only have 1 Minion.....Every necromancer I have ever heard about has an army of undead minions, but they pay a price for it, soooo... Heres a tree idea for necros (all minions act as 1 )

Core: Level 1.- Breaking Bones
+2 all skeleton ability scores, -50 Sp, -2 CHA
Core: Level 2.- UnLiving Servant
+1 (2 total) Undead Skeletal Knight +15% Skeletal Knight Attach Speed, Zombie Form
Core: Level 3.- Fixing the Broken
+2 INT,2 Skeletal Knight Ability Scores Lose all Summon Monster abilities ,Vampire Form, Lose 20% damage to negative energy spells (except Auras)
Core: Level 4.- UnLiving Debtor
+1 (total 3) Undead Skeletal Knight +20 PRR (minion) Re-summon Fallen Knight, Wraith Form Lose access to Conjuration Spell School
Core: Level 5.- UnLiving Slave
+2 (Total 5) Undead Skeletal Knight +30 PRR (minion) +4 All Minion Ability Scores, Lich Form, + 50% Un-Healing from Lesser/Greater Aura of Death

Tree Line 1- Weapon Enhancement 1 Add d4/d6/d8 Unholy Damage to Minion Attacks
Weapon Enhancement 2 2/4/6 to Minion Attack
Weapon Enhancement 3 Add Fire/Ice/Acid to minion attack 2/3/4 (each)
Weapon Enhancement 4 Add Force/Sonic/Bleed to minion attack 3/4/5 (each)
Weapon Enhancement 5 Add +10 to Minion Attack, Increase in Weapon Die
Tree Line 2- Recycled Armor 1 Add +4 To Armor Class of Minions
Recycled Armor 2 Add +3 To all Minion Resistances
Recycled Armor 3 Add +3 (total 6) To All minion Resistances
Recycled Armor 4 Add +8 (total 12) to Minion Armor Class
Recycled Armor 5 Add +9 (total 15) To all Minion Resistances, +8 (total 20) to Minion Armor Class
Tree Line 3- Sacrificial Benefactor 1 Sacrifice a Skeletal Minion and receive 20% HP and SP Return to Summoner
Sacrificial Benefactor 2 Sacrifice 2 Skeletal Minions Receive 1 Mummy Lord
Sacrificial Benefactor 3 Sacrifice 4 Skeletal Minions Receive 2 Wraith Lords
Sacrificial Benefactor 4 --------------- NA-------------------------------------------
Sacrificial Benefactor 5 Sacrifice All (min 3) Skeletal Minions(must be at full HP)Receive 2 Vampire Clerics
Tree Line 4- Desecration Of the Dead 1 Each time a minion Kills an enemy receive 1% HP back
Desecration Of the Dead 2 -------------------NA--------------------------
Desecration Of the Dead 3 Each time a minion Kills an enemy receive 5% HP back
Desecration Of the Dead 4 (5 Sp) Cause a corpse to explode damaging other enemies for 5% of it's HP (toggle)
Desecration Of the Dead 5 ----------------------NA--------------------------------------------
Tree Line 5- Tainted Service 1 ---------------------------NA-------------------------------------
Tainted Service 2 Add Inflict Light Wounds to Spell Book
Tainted Service 3 Gain TURN UNDEAD as per Paladin (instead of being destroyed effected undead serve the caster 20 seconds per Caster level -4)
Tainted Service 4 Add Inflict Moderate Wounds to Spell Book
Tainted Service 5 Turn Undead ability acts as a Radiant Burst(healing Undead) for all undead in area.