Extremely disappointing in terms of amount of new content vs the time between the updates. Early stages of development should take the most time, but once you have a working system with ui, models and environment ready, most bugs fixed, all you do is some posing for renders, writing new text and copy-pasting code, not to mention all the experience you get meantime, so the speed should actually go up a lot, not down to snail pace like we have now.
Even if you compare the development speed with only the same developer on early updates and completely ignore what other developers can do, it's pretty obvious 90% of the current content was done at the beggining and right now we see some limit testing on how far you can go with doing nothing without losing all support. And I'm pretty sure we are not at the peak of that limit testing yet.