First, as a new member, I highly recommend you read the Community Guidelines.
Second, in 2018, we increased the number of accurate device detections in homes by around 50%. On top of that, we introduced Community Names, smart plugs, broader EV detection, major refinements to how Sense refines its models and much, much more and we continue to push out model updates and improve our ML infrastructure constantly. I’d say that counts as “working on improving our ML algorithms and code.”
Third — For tiered and ToU support, as has been noted by us and others, it’s far from simple. For ToU, there’s a pretty solid overview of that (including some deep diving by @kevin1) here: Time of use pricing - #4 by MachoDrone and @ben gives another overview directly above . Moreover, even if it were simple, many factors inform product dev decisions beyond just ease of implementation.