Samsung Blackjack...its great, but not perfect

I'm currently using the Samsung Blackjack, but have found a few problems:

• Battery life is not good with the "small" battery, so you need the larger one and the extended back plate...there goes the size and weight.
• The Blackjack can't be charged with the USB cable if the batteries are dead or if the phone is off. The USB connection only works if the phone is on. I travel and like taking USB cables rather than all of the device chargers. This approach is especially useful when traveling internationally -- just one power adapter on the laptop and everything else charges via USB cables.
• No headset jack. I'm a big Bluetooth user and in most cases this works just fine. However, I like keeping a backup cabled headset for those times when the batteries die and I still need to be hands free.