I've seen a lot of feedback about disengage being a bonus action, and I kind of agree. The real problem here is that they have shrunk the range on everything and the defender/fighter classes kind of lack the tools to stop enemies just running past to your soft back lines. Shove and Hide likewise should be full actions, for sure
Likewise I kind of agree that cantrips like ray of frost are just OP. Freezing the ground under your target is really strong for a cantrip. Damage them, and make them fall prone most of the time? Very strong. I'm not sure simple cantrips should be causing ground effects. Making it slow the target is the design, but making them fall prone is a really strong shift in power.