I had the opportunity to run a few games today(and won 1!) with this deck and I definitively agree surveil is a great keyword to focus on for this deck, often couldn't stay on curve into Narset's engine on curve without one or two bigger spells already in the graveyard to cast for free.

Below changes made:

Curate> Preordain

Otherworldly Gaze > Serum Visions

Faithless Looting > Stormchaser's Talent (Maybe I'm missing something here, but this deck doesn't much care for recursion to hand and upgrading it doesn't trigger prowess/mage craft. Too expensive for a mediocre synergy)

Unauthorized Exit > Swords to Plowshares

Excise the Imperfect > Wear / Tear

Wheel of Fate > Lock and Load (Fantastic call, Lock and Load is a little slower and honestly is not an efficient finisher for the CMC slot it fills)

I was definitively trying to keep it more budget + some cards I already had(shock/fetch lands), but maybe later if I like the deck adding the surveil lands would be a worthwhile upgrade! I implemented some of the cards you recommended, generally upgrading existing cards at already served a similar purpose.