Very nice to see transparency on current and projected issues.
Could you include a timeline for #2 ?
As a side effect of this morning's coffee I offer the following loose idea:
While adding a secondary block chain to simply manage what might cripple a single BC leading to your 100,000 person limit might be new territory for BC technologies, I think it's a valid direction to explore. Imagine current block chain models as a single strand of a double helix of DNA, now imagine what you get when you increase dimensionality and have two intertwined block chains, interdependent. Without digressing I would like to see better planning such that blockchains can merge into composite chains.
Hats off SIA team, file systems are tricky.
I have been entertaining a model to bring containers to block chain models, simply because I REALLY like the spoon.net hat they sent me - just kidding, but containers could be stored as files proxy of SIA as it stands, I am interested in a block chain file system - sure I like Microsoft's new Protogon (Resilient File System (ReFS), but I foresee an ability (while SLOW) to allow for a truly decentralized file system, if not in whole, in part- permissions and all. I am picturing a container, but INSIDE the container? it's 100% decentralized.
I'm settling for SIA and STORJ and QORA and various other solutions that are allowing for nice tidy files to be put into decentralized storage.
My take ? SIA and the likes are hands down my POV - the first and only REAL block chain technologies the 'average' consumer can make use of (beyond ledger/transaction tracking services such as bitcoin, [insert 750+ alt coins here]) hands on, no hastles - NO command line- just nice storage solutions comparable to the very centralized ones that placate the airwaves of most AM radio stations these days 'For $30 a month, user XYZZY - and we back up blah blah blah'. So GET THIS RIGHT SIA heh... the world is counting on you.
What will be MOST interested to me is if smaller companies start repackaging SIA services as front end storage services... nothing wrong with that, everyone wins. I see it. Who knows, maybe one day Amazon says 'yeah, let's just outsource another 30 petabytes to SIA this month, they can get us a lower cost than our datacenters'.
While you list some pretty serious issues above, I patiently await this offering. Such exciting times.