Ulrik wrote:
Get the special rules and stats right - then we can make whatever lists strikes our fancy after that, and still get a use out of all the models.
A list doesn't have to, and shouldn't, use all existing models. It can be defined just as much by what it lacks as by what it has. Look at the Eldar lists - lots of common models, but the various craftworlds are defined by lacking a couple of key models (void spinner), a craftworld specific unit (seer council, pathfinders) and special formations of standard units (Biel-Tan aspect host, Alaitoc ranger hosts). Makes plenty of variety for me at least.
So if we nail the stats and special rules, you make an oldskool list with slug tanks but no shrikes or weapon 'fexes, and reverse with the new kids nids.
In a concise form the old/new split is effectively a function of the list and the choice of which units to include. Unit that appear in older and newer style lists should be broadly similar.
If you're starting with the stats then it would be worth giving relevant units placeholder rules (such as spawnable or enhances spawning) and then if they don't make it into the special rules it would give you easy to spot units to make alterations to (upstat, down point etc)
I think it may be worth defining some of the WE a little bit better. Will there be 3 sizes (9.2.1 has them as the Hierodule (40k termagant), Hierophant (old metal Hierodule) and Hydraphant (old metal Hierophant)) or is one getting dropped?
Also keep in mind a future Bio-Titan list (I included the unnamed reaver sized Trygon from the 40k codex (modelled by a 40k Ravener) and it would be a place for the vituperator if it is kept)
I also think the two Primes (Warriors and Trygon) can be safely dropped in favour of a synapse node character upgrade (maybe Broodlord as well).