Hey there!
Well yea, that version never went to live, which is sad, given that it's an entire hero. But still, his icons are missing, and so is one effect.
I've actually recently opened the map and did a bunch of quick bug fixes and changes. I'm writing a whole range of ToDo's for myself in an Evernote notebook, with all the ideas that I have in mind to make things more interesting. Particularly rethinking a bunch of heroes/hero abilities, and doing many-many item changes.
So hmm, I don't know what to say. I'm not really working on it, or at least not yet, and only god knows how much it'll take to start implementing the changes in question. But I'm considering it, if I can find enough people to help me out with the polishing (visuals and lore).
As far as the SFX is concerned: it's your work. The hero never made it to the public, so it's reasonable. Feel free to do whatever you want with it - once again, it's yours.
P.s.: while we're at it: would you be interested in helping, if I was to put in some work into the project? Given all the things that I've said above.