Regarding the features themselves:
- the Mix Assistant really does a noticeably good job for me - I just put several instances on the most important channels or mix buses, let them do their magic and it DOES sound better, requiring little to no tweaking other than sometimes I heave to help it recognising correct type of instrument; obviously I'm not a pro (or even a semi-pro or pro hobbyist), so I might not see the obvious room for improvements or flat-out flaws there, but then I think it is a product actually for people like me;
- I really like how simple, but at the same time powerful the EQ module is - dynamic EQ and internal / external side-chaining (available in v1, too) are awesome, although one thing I'm missing is being able to put some effects or filtering at the side-chaining source (e.g. a band-pass filter to just react to the click of kick, instead to the whole low-end body of it);
- I love how every module is multiband, allowing to limit the processing to specified frequency range - it's not an obvious feature especially for Gate or Transient Shaper, but it's a very welcome one;
- Visual Mixer for now seems like a gimmick, but I'm yet to try it in the context of finished track that has to be mixed - I like the idea of being able to quickly adjust levels, panning and width of all my channels from one place and see them in relation to each other, A/B/C different setups, etc.; one missed opportunity is they could've added some sort of light parametric EQ to all of their plugins at the output section where Limiter is, so that in Visual Mixer we could also quickly cut or boost low, mid and hig frequencies per channel by dragging some vertical nodes coming out of the 'bubbles' representing individual tracks;
- Tonal Balance Control is an awesome feature hands down, allowing to quickly reference your mix to 3 predefined presets (modern, bass-heavy and orchestral), but also to import your own reference tracks and/or folders and add those to the presets - it's really handy, when you've heard your track 100+ times and can't be objective anymore; the above idea about adding small parametric EQ to each plugin - Mix Tap in particular - would also make it useful for tracks with no Neutron instance on them;
- one drawback for me (not huge at the moment, because I'm primarily on Bitwig) is that the UI is still not scaleable which means that in Live or Studio One on my Surface Pro 4 the plug-in is very small. The pictures are still from Neutron v1, but it's the same in v2. Imagine that on a small 12'' screen:
Bitwig 2:

Live 9:

Studio One 3:

