If your opponent plays blue, you don't need the Aquitect's Will. Instead use 1 Counterspell and 2 Mana Leak (3 Mana Leak if you want to have a "Modern" Deck) or - if your opponent plays red or green- 3 Flashfreeze.

Maybe the Ink Dissolvers, Judges of Current or Silvergill Adepts could be exchanges by Sygg, River Guide, Cosi's Trickster or Stonybrook Schoolmaster.

Shields of Velis Vel could be exchanged by further Wings of Velis Vel or cheap counters.