It sounds like this could be used to trigger complex lighting scenes and effects by listening in on the MIDI for a hardware-only music set, is that the case? Because, if so, this may be exactly the kind of software I've been keeping an eye out for.
Yep, that's the idea - and to be honest one of the reason I've originally involved myself in this project is because I wanted to score lightings from Ableton Live with my band and that just did not work as well as I wanted it to. 6 years later the band hasn't released a single thing but at least we have our DAW now :-)
Note that the DMX editing is fairly bare-bones - my recommendation for advanced shows is to design the light scenes in e.g. QLC+ (https://www.qlcplus.org/) and then control them from ossia score at a higher level through OSC messages. But it's possible to bang raw ArtNet bytes if you want - we had a small exhibit doing just that a couple days ago.