While I can't comment on PvP since I refuse to step foot in the broken troll zone, I can say that in PvE shotguns actually feel better to me now. I never liked the extreme auto aim it had before as it just felt wrong and too easy sometimes. I use an Sasg-12 and the changes to auto aim have had almost no change in my performance.
to be honest everything seems to be balanced expect for that 1 shot sticky build that lets you use a sticky bomb every 8 seconds for over 600k dmg if you build twards shot guns they can still be quite lethal in the dz but the m870 got nerfed too hard it is useless now super 90 or sausage is the way to go for shotguns atm and you also need to be rocking a lot of armour dmg for the shotguns to work you need around 45% which will give you 15% dmg to players and if you are in tier 5 most people only have around 50% dmg mit so you drop it to 35% only problem is that some people are sitting at around 200k health and the shotgun dmg isnt good enough to burst people through heals