So first, I want to say that my review is based on a version just prior to full release.
This toolset is outstanding from top to bottom. Any issues or questions are easily and quickly handled by an active development team that not only seem competent, but happy to interact with their users! The community itself is still growing but even in early stages seems more than happy to assist whenever the devs might be offline.
There are still features being added and worked on, though some are higher priority for the devs than others. The good news is that the toolset is written in a way that if you have a basic understanding of code and are willing to take the time, you can modify the underlying systems any way you need, often with some help and guidance from the community and devs themselves.
Some of the tutorials released for MonMae seem slightly outdated right now, but they are being fixed and updated alongside new ones releasing as features expand. This does mean that currently the learning curve is a little bit steeper right now than it will be in the coming weeks and months. Fortunately, this isn't a major hurdle as MonMae is incredibly forgiving and largely beginner friendly. Most people should be able to drop in, and as long as they have the willpower to sit through a few tutorials and ask a few questions, it shouldn't be unreasonable for them to start seeing progress in just a few hours.