Edit: I wasn't trying to elicit sympathy here, I genuinely think that I wasn't clear on what I was trying to communicate. It went so well in my head, as it usually does, but I fell far short of what I wanted to express. I'll attempt to rectify some of that with a writeup (see next para).
In summary, inspired by LevelDB, we've ended up with a core set of primitives in LevelUP that can be used to build feature-rich and advanced database functionality. Atomic batch and ReadStream are the two non-trivial primitives, open, close, get, put, del are all pretty easy to understand as primitives, although del is perhaps redundant but we're opting for explicitness.
My slides are online but hopefully I'll be able to get my DailyJS article sorted out soon and I'll be able to explain what I was trying to get at.
ReadStream as a primitive query mechanism is not too hard to understand once you get your head around key sorting and the implications for key structure. Batch is a little more subtle and relates to consistency and our ability to augment basic operations to create more complex functionality while keeping the data store in a consistent state.
I additionally raised "Buckets", or "Namespaces" as a primitive concept and discussed how sublevel has effectively become the standard for turning a one-dimensional data store into a multi-dimensional store able to encapsulate contain sophisticated functionality behind what is essentially just a key/value store.
Thanks to the LXJS team
It would be neglectful of me to not say how absolutely grateful I am to the LXJS team for putting so much effort into taking care of speakers; fantastic job.