I don't need my 5e games to be more deadly or darker themed, but I'm finding the game to become more and more "consequence free" for the players. Some examples off the top of my head:
1. Animal buddies/familiars are all spiritual. If they die, can be resummoned. Can also be dismissed if having them around is challenging (paladin mounts, for example)
2. Healing Word at a distance. Don't have to figure out how to get to your downed buddy in a fight.
3. Barbarians rage runs out? Extend with bonus action.
4. Potions can be drunk with bonus action. So in middle of fight, a character can smack the monster, grab potion, uncork it and drink it all on their turn
5. Surprised party just gets disadvantage on initiative now, meaning the surprised party could still go first.
6. Lots of choices can be changed during rest or by levelling up.
7. No limit on cantrip casting and they can do decent damage
8. All hp healed over night
9. It's really easy for rogues to sneak attack.
I'm sure I'm forgetting other things as well. I'm not saying I'm against all my examples but they are piling up and I'm starting to feel all grognardy for the first time, even though I'm old.

And too many spellcasting classes!