It's about time for that, don't you think?
So how about a home-brewn list until FFG has lobbied GW to do at least a WDex?
HQ
Ordo Xenos Inquisitor (Lord) (+Retinue)
Watch Commander (+Chamber of Vigil equivalent command squad)
Watch Captain
Deathwatch Keeper
Deathwatch Librarian/Epistolary
Deathwatch Forge Master
+1 or 2 named characters (Mordigael? Carmillus? Axineton? someone other notable DW marine from canon?)
Elite
DW Dreadnought variants
DW Kill-Marine (similar to SW Lone Wolf?)
DW First Company Kill-Team (terminators, freely mixing of shooty and assault)
Troops
DW Kill-Team (roughly Sternguard equivalents with quite some additional rules)
Transports: (Damocles) Rhino, Razorback, Drop Pod, Land Raider, Storm Raven, Land Speeder Storm (see Shadow of Madness), Chimera for Inq
Fast Attack
Land Speeder
Bike
Assault Bike
Heavy Support
Thunderfire Canon
Land Raider (+variants)
Predator
Whirlwind
Vindicator
Don't know about you but it sounds **** Awesome! to my ears. Only troops section is a bit deserted. Any ideas?
As for the kill-team, it's a special squad and should pretty much have in principle individual upgrades working similar as the options of vanilla Marines' Honor Guard/Command Squad (Apothecary, Champion, Techmarine, Chaplain). I also had the idea of a special rule of combat squading the team on the table (most likely into an assault and a support element). Don't know if that is feasible though. Also: xeno tech, xeno tech everywhere.
Alex