There are still a few things that would be on my wish list, a proper Maya plugin for full integration (or at least an option to export flattened channels in Maya's native UDIM format), the ability to re-project painted details onto another mesh or the same mesh with different uvs and the ability to read alembic for animated meshes would be a nice plus. Having said that in terms of ease of use, non destructive workflow and ability to work with huge numbers of variations, Mari is second to none. If anyone would find it useful I'll record a video showing my both my workflow from Maya to Mari and back and also my typical Mari techniques and whatnot. Let me now via email or through the contact form.