Hi all.
Relative nwebie player here, currently running a Black Legion army, and looking to conribute to the list if possible.
I've played a fair few games now using the version of the list from the vault without the ammendments proposed here. However, I'm looking to test the changes over the next few weeks, assuming that my opponents agree

. Great job on them by the way!
From reading through the proposed changes I do have a few thoughts / comments, obviously these are purely based on opinion so feel free to take with a pinch of salt.
Firstly, the Stalker, is this a unit too many? It seems to me that with the Desecrator unit filling the Obliterator's old role in a more balanced (i.e. your opponent can actually target them seperately from the rest of a formation, at least as long as there are no other vehicles) way, and the focus being on making the Hellblades a better choice than the Swiftdeath was that the Stalker seems a little too much *ducks*.
Also, I agree with moving the DeathWheel to the Titan allocation, as it stands it's too easy to put down a lot of void-shielded Fearless units (particularly in low points games), but I think that dragging the rest of the Assault Company formation with it is a bit far. Again to me this puts a lot of pressure on the 1/3 of your points to spend on War engines and Aircraft, especially as you may well want Hell Talons to answer for the non-existent artillery, this might also be a good place to fit an all-defiler formation

.
Finally (honestly) I like the idea of making undivided a worthwhile choice. Maybe something like 'Marking' a formation takes up an upgrade slot, and some points (on top of Daemonic Pact, which maybe only gives the ability to summon Daemonic Beasts), once a formation is marked it gets some soft of god-specific aleration to it's abilities and the ability to summon it's Daemons.
Anyway, I'm looking forward to trying the changes out, and will be sure to post my experiences!