"Still technical milestones left to achieve"? Very much so in the long term. We have many ideas for what can be done that go well beyond what the current product does -- but when and how we get there is constrained by resources, whether people seem to want it, etc. It would not make sense competitively for us to publicly publish all our ideas.
Growing the user-base is going to be a function of both advertising and organic growth. Where we spend limited advertising resources does depend on first determining which channels look workable for us in the current environment. (e.g. Although we won't stop selling directly to consumers, it may make more sense for us to primarily focus on camera installers and integrators, rather than to compete with the large advertising budgets of other consumer brands.)
Re: Organic growth / word of mouth. We are certainly interested in supporting enthusiast communities like Home Assistant, Smart Things, Hubitat, etc and are well aware they're large enough to help a lot with awareness. That's why we put out the home assistant integration. However, we're not specialists in any of those systems, and we were hoping our role would be one of supporting an integration rather than doing it ourselves. We would also love to see it be the #1 camera integration in Home Assistant, but so far haven't really seen much interest from anyone wanting to own the HA integration. We're also not sure of the level of interest in the community even though it's large ... Many people seem to be using Pi's and may not want to buy a system like ours as the hardware cost is comparatively high. If someone wants to develop the integration further, we'll certainly do what we can to support it. (Of course, we're small and integrations still compete against other features for resources, so interest level does matter.)
In the near term, we're looking at Alexa and Google Home support since those were popular requests, and at what can be done to improve the UI. SmartThings would be high on the list for a look after that if no one else has taken a stab at it by then.
What other long-term bets are you comparing us to?