Please bring the Sorcerer capstone inline with other classes as far as the bonus to prevailing stat. Other casting classes can get a +6 from their main tree to casting stat. Also, the icy prison in water savant t5 never works. DC is either unrealistically low(10 + con mod (should be CHA) + sorc level) Easy to hit a 45+ dc at 20 but it never freezes anything. Also this shouldn't require water breathing.
Suggestions for all savants:
Capstone: Bring the Charisma bonus in line with other capstones (+4 instead of +2)
T1: Spellcraft skill bonus
T2: Reduce pierce resistance to 1 AP per rank
T3: Seems right where it's at
T4: the tree specific abilities are fairly useless. Or at least easily attainable with a low level item.
T5: The evo bonus enhancement costs 2 AP for just a +1, Spellsinger or Arcanotech costs 1 AP and gets 3 ranks(total of +2 for SS or +3 for AT)
T5: as mentioned the Icy Prison enhancement shouldn't require water breathing, and never actually freezes anything. Maybe remove the freeze and bring it's base damage in line with fire savant( 2k )