I agree completely. I believe that, in time, a couple of cryptocurrencies will begin to be widely accepted as payment methods by businesses (and it will unlikely be Bitcoin, as it is slow to confirm transactions - maybe LiteCoin). And a couple will gain momentum, because they will be perfect for laundering money (ZCash is through the roof, at the moment).

Btw, once Steemit allows you to adjust your upvoting power, you do get a little blue slider to choose the percentage (were you joking, or do you still not have this slider?). In fact, I've just noticed that the slider remembers the last used percentage for post upvotes and separately for comment upvotes. Today I've been sharing 30% on posts and 1% on comments quite easily, without any further adjustments.