lets try and avoid this situation again

Having the World Series be won via a rain-shortened game would be a weird, ugly situation for baseball. No question. You don't want an ump waving his arms to be the "winning moment" instead of the usual final out or walk-off run. That's why I could understand the Phils and Rays continuing to play through a cold, pouring, windy night. But then after the game was tied and subsequently suspended, Bud Selig claimed in a post-game press conference that it was within his power as commissioner to suspend an un-tied game.

So the question then becomes: why didn't he do this? It certainly seems like the right thing to do in an ethical sense, but technically it would mean the commissioner of a sport changing the rules for winning literally in the middle of the game. If Upton had been out at home, and the 6th inning ended with the Phils up 2-1, and then the tarps came out, wouldn't the Phils be within their right to declare themselves the champions? They had, after all, won the game according to the official rule book. At the very least, Phillie fans would have gone all post-apocopltic, donned football pads and leather pants and begin running around Philadelphia in dune buggies.

The lesson here being: change the rule book to officially allow for suspending certain un-tied games. Those "certain games" can either be potential World Series-ending games, all World Series games, or all playoff games. Take your pick. As long as we avoid having to chose between playing the World Series in virtually unplayable conditions, a rain delay ending the World Series, or the commish having to deny a team their technical championship.

Update - An article on mlb.com points us to the applicable rules about rain delays: Rule 3.10(c). That rule does not say how long a rain delay can last until the game is called/canceled, only that the suspension continues "as long he (the umpire-in-chief) believes there is any chance to resume play." It doesnt say "... chance to resume play within X amount of time." So it seems the chief umpire is within his right to say "hey, there's a chance to resume play three days from now, so the suspension continues until then."

At any rate, I think it's best to put somewhere in the rules that no World Series (or maybe playoff) game can be called early due to playing conditions, and if necessary it will be suspended, no matter the score, however long it takes for the weather to clear up.