Cryptohedge will need this for when we do the sharedrop on CFSGOLD. Scan for every address that holds the asset ID, and then send them CFSCOIN accordingly. So I hope there will be some way to do this relatively easily, and it would be even more awesome if bitsharesblocks could just make lists of it so anyone can easily do these kind of sharedrop promotions. It could even be used for manual dividend payments - if you specify some minimum limit of UIA an address needs to hold before it can receive any dividend then it will be very efficient as long as it doesnt happen too often.
The other option for sharedropping on UIA holders is to have a bot that you can send e.g. your CFSGOLD to, which then returns a new UIA that represents CFSGOLD post sharedrop (CFSGOLD1 or something) and then CFSCOIN.