I hope there is some movement on this feature soon, it's becoming a must have for any product we use and Lansweeper missing a restful API is going to force us to migrate to another solution that does in the near future.
I know for a fact you are losing potential customers just from my own discussions who won't even consider implementing something that doesn't have an API, the time has long past where people consider this a nice to have feature, it's well an truly a must have standard. It's very jarring for people when they find out it doesn't have a programmatic interface, people react in the same perplexed fashion you'd expect if you told them it does not support user logins.