I too was actually deterred the first time i heard that the Raps were trying to get Nash. From a basketball perspective, it made little sense to me, but the NBA is not about just basketball anymore. Having Nash here will definitely boom the business side for the Raptors. It would be a feel-good story having a canadian MVP play for a canadian team and having a superstar of Nash's calibre may entice other superstars to explore canada as well.
I dont think BC actually made disastrous moves in the past, things just did not work out.
I think the current Raps roster could do some good things this season and possible do a bit of damage in the east. If you were expecting BC to have built a contender in a span of one off season then i think thats a bit to over the top.