I love cheering against the Yankees almost as much as I love cheering for the Red Sox
As a long-time Yankee fan (to counter-balance; the Cubs have a place near and dear to my heart) I'm tossed. Would I love to see the Yankees in the Fall Classic; of course. However, even if they do win the ALCS I may not be able to watch the games as our cable company - Cablevision- is cuurently not carrying the Fox Network. Fox and Cablevision are in a huge dispute of fees. Fox carries NFL Football, but my NY Giants only play on Sunday and we're still playing softball, so I'm really not missing much.
On one hand I would like to see the Yankees on Fox. On the other side, a Texas v SF Giants World Series would teach both sides a lesson. Not much interest here on the East Coast for that, so Fox will lose a ton of money as ratings will be small. Cablevision will continue to lose subscribers the longer they discontinue Fox.
MLB doesn't compete well anymore for TV viewers and don't expect that to change anytime soon.