There's no distributed execution yet.

Easy to get going locally.

I'm not sure but I think Presto is in-memory? We're optimizing for SSD disks to easily support big states, and achieve durability this way. SSD disks are still plenty fast.

Definitely better streaming support. We're very much concentrating on good streaming ergonomics. OctoSQL isn't a batch execution engine at its heart, it's a streaming one.