Frankly, every card i've gotten in the past 3 years has gotten the same treatment, shroud off, while you're at it a bit of as5/whatever else on the core instead of the stock paste, then ziptie a 120mm fan to the heatsink, £5 fan, silent cooling which is vastly better cooling than crappy blower fans get you. Air temps barely rise in the case, more noticeably with the 4870x2 unsurprisingly
I was too lazy to put anything to deflect the air going from card straight to cpu cooler, only made a 3-4C difference which didn't effect top stable overclock. If I was less lazy or more worried you could use a smaller fan(main reason air goes straight into my cpu sink is the 120mm overhangs the card by a good couple centimetre's so it pushes air up that way, a smaller fan would have less direct airflow, or use something to channel the air elsewhere.
I would buy a 3rd party cooler, maybe, if it was cheapish and out soon enough, but they never are, months and months wait for an average cooler thats 5 times as expensive and cools aswell as a strapped on £5 fan, which you can do from the day you recieve the card?
What companies need to start doing though, is sapphire for instance, letting you buy the vapour cooler they have on their own versions, from their website at cost basically, so you don't have to wait months to buy the card, but pay for the cooler when its available.