Call me a minimalist but do I really need to look at that "1" in the labelled BTC field. Its always "1". (of course) Why not make the gadget smaller by allowing it to be hidden? Alternatively, I'd like to be able to configure the gadget to just show 2 fields, one for MtGox (latest) and another for BTC-E (latest) for instance. Even if nothing changes with this gadget, it is already an excellent one. (way to go!!)
I hear you, I'm all for minimalism. But it's not meant to always be 1; miners will typically have different amount there, and I for example have two BTC gadgets, one with 1 BTC to monitor price and other to monitor my Bitcoin net worth (where I actually pull this number from Google doc spreadsheet which calculates my current holdings).
There's an issue with making it smaller (1-field) - there can be only two sizes for one gadget, normal and expanded, and expanded is already used for displaying 5 fields view. And displaying only one field on the current size might be ugly, though I'll have to try it - though it won't save any space.
You do make interesting suggestions and I'll think about it for the next version. I actually like the idea of displaying two exhange rates at the same time - now you have to either use expanded view or put two instances of the gadget on desktop, one for each exchange.