I really can't see this card getting a buff with the way the current metagame is laid out - quanta gain in fire is already covered by Immolation (I don't think it needs much more than that ATM as currently only 1 other element can generate a burst of quantum like that) and the upgraded version's speed is fine as it is, especially w/cards like Nova that can't handle the more expensive costs of Pulvy or Steal. It's also very versatile when dealing with permanents - even if your opponent has no lethal weapon like Eternity or Arsenic or shield like Permafrost, you can:
1) Destroy SoGs or Sancs to slow regeneration.
2) Destroy Hourglasses to slow drawpower.
3) Destroy pillars to slow down quantum generation. (Option 3 is usually always available.)
IMO, gaining quantum is uneeded because:
1) MP + Immolation. You have a much more likely chance of getting a good hand setup if you can get 3
out - play a Fire Tower, explode whatever permanent is lying around, and then play MP and immolate. You get a net gain of 11
and 1 of each other element for 4 cards. Immolation already can do better with an RoL, net gain 9
and 1 of each other element for 2 cards.
2) Imbalances the card in general - normally upgrades are worth -2 or -1 cost. With your change to gain 3
when played you're technically lowering the cost to -2 quantum (aka less than free) - which is being put on a card that usually has something it can destroy to make itself useful. "Draw a card" would be even worse - that makes Precog very inferior to it.
3) Adds speed to an element that doesn't need it as much.
and
could probably use a speed boost much more than
could - even without any changes Fire is able to do pretty well as it currently is, with decks like vNG, Fractal MP, Anti-Bolt, and Firestall.
I don't really feel it is borderline OP, but I do think it's powerful and versatile enough to not need a buff - and chances are there will be more permanents put into the game that will need to be dealt with, and this card would be the quickest one to handle it.