And then, after next halvings, we may have a lot more non-monetary use cases, where people will make zero satoshi inputs, zero satoshi outputs, with zero satoshi fees, and then, coinbase amounts will be low, and blockchain will no longer be used to process any payments, if 90% of the network will be focused on NFTs, and other things, and if coin amounts will be treated just like some unimportant field in legacy transaction space.
I'm not so worried about this. In the past few years, I've seen blockchain data spam pay hundreds of millions if not billions of dollars in transaction fees. It's the normal Bitcoin transactions that benefit from lower fees, not the spammers who earn from gullible victims.
How did you do that?
I'd like to know that too. I always thought Electrum used it's own format for unsigned transactions. Even coinb.in can't decode it.