Winners and Losers as I see it:
BA Captains - relics, Warlord traits, relic blades, artificer armour... These guys just became everyone's best friend, WS 7 Int 6 Str 5 2+ 4++ with two decent warlord traits is pretty nasty.
Chaplains - these assaults HQs whilst at first appear nerfed in the HQ slot are bringing rerolls to hit to things like+1WS +1Int FC LC BA Termies... Not to be sniffed at... Astorath or Lemartes on DC are pretty decent still too
Sanguinary Guard - Fear, 10 man squads, +1A banner at +1Int are plenty lethal
Mephiston - CentStars new BF, free 12" move yes please.... Hitting on 2+ Str10 FW....hmmm... Also a great Psychic shutdown unit with PsyH, AW and Lvl3
Scouts - Camo cloaks, FC, HF HBs... Str5 on the charge... +1 WS +1Int... F'n'P?
Fast Tanks again great for Tempestus allies
Sang Priest: now not a must take, but decent enough buff...
Assault Terminators...The Boss is a BA and wearing TA, probably in a Storm Raven
Sternguard with HF in a drop pod... You got my attention, do I charge into the wall of death or face Str5 Int5 next turn?
Librarians - now cheaper... But will you take one over everything else?
Losers:
Blood Talons... Waste of time especially on DC dread
Fast Attack Slot....oh boy...I could fill this with 3 of every option...and want to take all of them
Vanguard Vets... A must take said nobody ever..competing with DC and Sanguinary guard...there's never a reason to take them...
Assault squads... Now in a tight fast attack slot...inferior to scoring DC in everyway...why would you take these...just infiltrate more scouts