>>33791481It's hard to tell at this point because we don't know shit about stats or movepool.
But if we are to evaluate a Pokemon's viability on their typing or abilities alone, then Assembly and Dusk Lycanroc will be PU.
Burst has potential depending on its special attack and speed; if it is outclassed by Chandelure, it will be RU, but I can't see Burst doing any worse than that. It has a really great offensive typing.
Adhesive is pure Poison which is a shit typing, so based on that alone (assuming it gets that 570 BST like other UBs) I think it will be NU.
As for the Necrozma formes, I imagine Dusk Mane will be Ubers (slightly higher viability than Solgaleo) while Dawn Wings is either OU or Ubers depending on its stats (because Shadow Shield > Prism Armor).
If both Necrozma formes turn out to be stronger and faster than Solgaleo and Lunala, then they may have more use.