Oh for sure, this thread is about negative tradeoffs so it is simply the first thing that jumps out to me on that regard. Totally Bitcoin is far better solution to currency than fiat. I think the gig is still out on whether or not it will become extremely monopolized (by those who will corner the market via buying up the available quantities while fiat still has purchasing power and likewise investing/gaining majority receivership of newly minted coins by doing the same to mining) in the meantime today it represents an exciting propsect of shift in financial dominance. Evil men will at least have less levers to pull even if they do gain a monopoly control.