I could see it having one key instead of multiple as a more BTC/ETH style system. And yes perhaps we could start with just a cryptographic address instead of human readable name.

But in general it sounds like your needs for 3speak are pretty similar.

Thanks for your input I haven't talked a lot with steemit inc about these things at all so it's interesting to get your take. When i thought about what was likely actually needful i was realizing that it doesn't really seem to complex. And the barrier for a content producing user at 3sp only with no delegated SP also gets easier as well because of resource pools.