I'll see if it's possible to increase the sig space in the PX.
I haven't found any options for it yet, but it should be possible.
When it comes to the bank, you will still be charged with the withdrawal fee...
But if you have 2000MilBucks in the bank, that shouldn't be a problem... 8)
I just had to add that limit because else inactive members with money in the bank would eventually flood the bank...
And the whole idea with MilBucks was to get you to post more.