I believe one of the main reasons for the slow decline of the bitcoin prices is that people who wish to invest a large amount of money do not feel comfortable about securely storing a large amount of value.
With
BIP32 and
TREZOR investors are starting to feel more confident that they can indeed manage holding their own Bitcoins.
Once a significant proportion of investors move to such secure Bitcoin storage technologies I believe that the incentive to sell will become much diminished.
I suspect that the in unofficial markets (such as
Local Bitcoins and
OTC) will be the first places to dry up in excess liquidity. (as in the average price on these markets will be higher than say on
Bitstamp).
When this happens, I believe significantly because of secure wallets, we will be officially at the start of the next major bull market. (it is important to remember that the bitcoin prices is dictated by people who
do not spend bitcoins rather those who do).