As should be expected, a lot of players are asking - even before the Codex releases - "What is NOVA going to do about the new Eldar?!"
The biggest concern is their mass access to Strength D on non-SH/Garg platforms.
First off, the Wraithknight.
This is now a Gargantuan Lord of War. Under NOVA's 40K GT army construction rules, these are not allowed.
So, with regard to the GT, at least unless we change the rule just to make an exception for Eldar (which seems an unlikely and unwise path to take), Wraithknights won't be hunky dory.
The real question applies to the large number of units choices across the codex who can select D otherwise.
Artillery - D cannon artillery
Hemlock Wraithfighters - D blast (at -1 on the chart)
Wraithguard - D shots (presumably at their 3-edition-long 12" range) or -1D templates
So what's to be done here and what's the import.
First off, on the Templates, we don't use Promethium relays ... ipso facto, people aren't going to torrenting D across the board from 32 point models.
Additionally, the honest truth about S-D at -1 on the chart is it is a LOT less powerful. 3+ to wound things means 1/3 of all hits fail outright, regardless of target T. Additionally, while they do cause d3 wounds, they never cause d6 or ignore invulnerable saves. Furthermore, the Hemlock's D blasts never ignore cover saves.
If you want to look at it in a couple of examples, some targets are badly hammered by these and some would actually be worse off if faced with much weaker weapons.
For example, Necrons obviously are hurt when their Decurion MSU units no longer have 3+ saves followed by 4+ reanimation ... especially so in the case of the Template weapon and its ability to simply ignore all of their saves on a 3+.
Vehicles are badly battered regardless due to the # of hull points inflicted by the "median" D impacts. That said, things like Knights are suddenly dependent on things like Adamantine Lance to even survive ... which is interesting.
Common "star" units like Khorne dogs, on the other hand, are not hurt very much at all (At least in comparison to other weapon options). For example, a S8 AP- template weapon inflicts more damage on a Khorne Dog, on average, than a SD AP2 template that is resolved at S4. Most people would have complained in the OPPOSITE direction (aka "it's too weak") if D-Scythes were made S8AP-.
If you run the numbers and compare as well the ability of Wraith units and the like to survive sustained shooting and/or find their way out of combat with even relatively weak units, you will start to see that the -1D hits are not nearly as game busting as the unmodified ones are.
So with NO codex, no ability to make firm decisions, and only initial thoughts, it certainly has come up in discussions to simply modify it so that any D weapon not carried by a Super Heavy or Gargantuan suffers -1 on the D chart. This actually nerfs them substantially against *most* targets while retaining their high potency against "single target" type items like Monsters and Vehicles.
Food for thought as we go through the next couple weeks awaiting a codex release and sufficient time to make smart decisions about what rulings to follow (if any).
One thing is true and needs to be stated - players do NOT like D as a general rule. They also don't like invulnerable units that are very difficult or near-impossible to kill (this applies to everything from jet-stars to certain entire decurion army builds). For some reason, the reaction to both Super Heavies and D in general at NOVA in those events which allowed them has been especially severe, and we're not the only ones to see that. If you look at the recent LVO poll, ranged D was especially decried by attendees who experienced it.
There's something about a game that takes your opponent completely out of the picture which is not very engaging (ipso facto: all the hate for watching someone roll a 6 and tell you to pick up your models with no recourse ... and all the hate for watching a single unit bounce all the attacks of your entire army with 0 casualties).
It bears reminding that no one has ever played Games Workshop's game at Tournaments "entirely by the book," from missions to points to the works. Even those who argue stridently for "pure" 40k will always caveat "well, except obviously you can't do Unbound" or "well, except obviously you can't do Forge World" or "well, except obviously you can't play totally unmodified book missions, you need to add points and stuffs!" We'll continue at NOVA to leverage community feedback and wise decision making toward *trying* to host the most fair, universally appealing tournament format possible/out there.