I'd sell the BW and get a better board instead. )
I currently have a Blackwidow and I also agree - use the board until it dies or something, because the money spent on keycaps on this board is better saved for buying another board. Not worth the time and extra money.
Yup. Just something about the way this keyboard feels when typing on it that makes it feel so much more inferior to the Ducky Blues, Filco Blues, QFR Blues, and Leopold Blues. I can't really explain it but I get the same feeling from Xarmor Blues which my friend owns (ironically I found out later that the two are made by iOne). I personally like how Blues feel on the Ducky the best.
BUT if you want to improve the BW in any way, just get a set of PBT's; it'll feel like a different keyboard.