Hoping for a price crash is really silly IMO.
The effect of a house price crash would be that banks would become very risk averse and lending levels would fall so they would have tighter requirements placed on those who would get mortgages. They would go back to requiring 25% deposits, and lend lower multiples of salaries. Meaning that if you can't get on then housing ladder now, it is unlikely that you would in the result of a crash. The problem with hoping for a crash is that you hope everything else changes but your position, but it will have a major detrimental effect on your ability to buy.
Secondly, a house price crash would result in a massive drop in consumer confidence and mean that consumers would have an increased propensity to save, this means that shops receive less revenue, business optimism falls and they stop investing. This leads to redundancies being made, and eventually a big recession.
Finally, with house prices being lower construction firms stop building, meaning that the supply side of things doesn't change, and eventually the prices will rise again.
So essentially, a house price crash leads to less lending and tighter controls, a recession which threatens jobs, increased business insolvencies and essentially only benefits cash buyers.
YABU