The non-profit sector, and donors to it, would also benefit from such radical transparency. Charities that can prove that they're not blowing donor funds on exorbitant executive pay, corporate jets, fancy hotels and catering, for example, and are actually delivering real benefits to people in need (or at least working diligently toward what they've promised to donors), globally visible (at least up to the fiat interface or the real-world-goods/services interface), supplant and, er, out-compete, those which waste so much on overheads. For them and for donors, globally visible public records are a desirable feature, at least for the ones that survive the transition to a cryptocoin economy.

As another example, I operate a Bitcoin legal defense fund for the accused Dread Pirate Roberts (link in my sig). The transaction record to the fund's sole address shows that I've disbursed nothing of what's been given, and it needs to stay that way until I can properly justify an expenditure.

All of these models, and others, can benefit from reusing addresses tied to individual and/or institutional identity, and address re-use carries a massive benefit in simplicity ("donate here" QR codes on paper flyers? yes we can!), despite the known drawbacks. Deprioritizing or (especially!) filtering transactions seems to raise the costs for implementing such models, significantly.