Leveticus my main Master since 2016, so I have some thoughts about his keyword.
At first - he still strong. But now I should think a bit and prepare more.
Levi itself still killing machine, especially with Stat 6 at melee. But he becomes much more fragile: heal after ressurection only +1 wound from waif's health and not end conditions. Against heavy burning/poison crew you need Johan in roster. And Emissary always good addition.
For scavengers - yes we lost fast, that sucks. But now we can push other models and remove any type of markers. That's huge and won me games not one time. And wierd device is a bonus now, that's also cool. Tools for the job one of the best abilities in a game.
For necropunks - just keep low masks in hand. If you really need leap - prepare. For 5 stones they are really cool. With current GG I often take 2 in roster.
Nerf that I don't like is Alice movement. Downgrade to 4 is too much. Especially in current GG. 5 was enough. And argument that "she just disengage and shot you 3 times" is redicolous. Now we don't have easy fast, so even if she disengage it wiil be only two shots. But with move 4 she can even don't disengage. Her main purpose is shooting, and that not work very well now. But. Scavenger still can push her, as well as Emissary. So, nerf didn't "solve" problem and just make model worse. And her pit traps marker. There is no synergy with crew. It would be better if she will drop, for example, scrap for Ashes. I think she should receive her move back (at least 5) and change pit trap marker to something more usefull for crew.
Ashes and Dust - I think he should receive buff, because without build in crow trigger his damage output to low for his fragility. If he got splitted on to two parts - 95% he don't assemble again. Because he needs both parts alive and in btb. And there is A LOT of options how to move models. I think he should receive build in crow back OR make ressurection easier.
Marlena is good. Desolation I think should have def 4 or 2" or +flip on attack. If we check similar models in other faction the have it. Right now he too fragile to reach target by himself and you need to spend a lot of resources to move him with other models. And when you start attacking you often don't have enough card for good output (for his cost).