I think you are right that Flash was better with 4x Brainstorm and 4x Scroll, but you have to remember that the gush decks that people were playing then could utilize that too, it isn't that hard to assemble a combo that has 4 pieces and 8 pieces respectively, even with restricted draw spells and 4x preordain though (it isn't that hard to do this with 3 and 2 pieces in a painter deck a lot of the time).
Remember that summoner's pact is a fine card in the deck, giving 8 copies of protean hulk, if you go for that kill.
Finding flash is a little harder, but in our BUG deck we do have a fair amount of tutors to give access alongside the aforementioned ability to play the new standard blue draw engine of restricted cards + 4x Preordain. I think there is room for all that, but I can sketch out a list when I have a couple minutes later today (look for the edit). I am scared of this deck, as it sounds a lot like a faster oath deck with less weak to shops mana.