I'm done!! And my thoughts are mostly positive. The Shadow Pokémon roster is pretty varied, so much so that I managed to have 4 full tempo sets in the purify chamber as early as the ONBS takeover. Similar praise goes to the wild Pokémon even though 25 mons per Poké Spot seems a little too much considering how these areas work. One thing I don't get is the purpose behind so many repeats, there're aren't as many as older versions but it popped up after I looked into what mons I could find in the wild. Speaking of repeats, this time concerning TMs, you get the picture (repeated I found numbers 3, 4, 5, 8, 19, 22, 23, 31, 34, 39, 40, 41 and 50). Also, I like the notably increased catch rate for most Shadows, especially because tanking them is no easy task (more so than XD) so it balances out.
My only major issue is in regard to certain shadow attacks; the multi target(Swim, Shake, etc.), is it possible you make it so that they don't hit the partner as to prevent them from fainting another Shadow, Ardos in particular took me 4 tries because his Shadows kept killing each other with Shadow Swim; the recoil moves (Lunge, Crash, etc.), change the recoil so that the user can't kill itself, kinda like how Shadow End would deal recoil damage equal to half the user's remaining HP (though I suppose if you did that you may as well ditch the former ones and bring Shadow End back); and finally, I will make a predictable request and ask that you GET RID OF SHADOW BOOM!!!
And now for the more minor issues:
-Text inconsistencies persist (trainers both directly and indirectly referring to mons they no longer have, Pyrite Colosseum's registration info is outdated, etc.).
-At one point the mirror radar alerted me of Mirror B at the Rock Poké Spot, when I got there all I found were Trudly and Folly. I could talk with them and their dialogue seemed like that I would get when talking to them at a colosseum. Also, Mirror B himself never appeared.
-Aurora Veil has no PP and as such doesn't work.
-Mach Punch has Shadow Veil's description.
-The AI likes to get stuck using Shadow Veil and Shadow Room.
-Late game Shadows take way too long to purify, especially the legendaries, not even at max tempo and flow do they progress at a comfortable pace.
-And finally, some of the Shadow attacks sound a bit wimpy, any chance you can change Shadow Summer to Shadow Scorch and Shadow Swim to Shadow Tsunami.