If no blocks are found and in turn no transactions are processed, then the bigger implication is that the mining fees will become astronomical as more and more transactions vie for a place in the next block on the chain.  We see that already with a couple of hundred blocks worth of transactions waiting to be processed.  In the long run, this points to bitcoin and its blockchain moving away from day to day trading and into the realm of inter-bank trading (at least until the time to find a block becomes too great)