Is there a plan to develop their own blockchain in the future?
Since zix trasnactiosn will be done off chain,i dont really see need for that in the near future.
If there will be need for something like that,they canalways switch to POS in the future,even though i personally dont think its needed.
Nah, that won't be needed as those transactions are not the same as regular ETH transactions so there won't be any overloads.