But I have no influence on where the empty transactions ends, right? I didn’t check the code, but I assume its a transaction to myself. So yes, you can detect burns by scanning the blockchain for transactions with large fees and which end in the sending address.
However, there is only one “kind” of burn. But burning allows for many many different applications in our case, which requires to color / mark the burns somehow. If we could “burn to an address” like described above, then we could create the public keys of unknown addresses (like Counterparty did with BTC) and categorize burns according to their destination address.
For example we could create to burn destination addresses A and B. If you burn to A, then then next block creates NBT at your address at a shareholder defined rate. If you burn to B, then the next block also creates NBT at your address (much less), and if you burn the same NBT + some fees within 2 weeks then the following block will recreate your NSR. So with burning we can make financial market offers to the shareholders which they can take at any time by initiating a corresponding burn of their NSR. These are just examples of course.
I just think that burning is one of the most important tools for us, because it allows to give money to the whole DAO and not to an individual, just as grants are paid by the whole DAO and not a single entity.