Hold priority after combat damage for spells that target attacking or blocking creatures
I noticed this recently for Steer Clear, I don't know how Arena behaves with other spells.
My opponent was attacking with Shepherd of the Clouds and I only had a Holy Cow to block and a Steer Clear in hand (with no mounts). I could have cast Steer Clear before blocks or before damage, and maybe I should have from a strategic perspective. But I decided to wait until after combat damage to make sure the damage happened (didn't want to get blown out by a removal spell). However, when I passed priority to combat damage, Arena skipped straight to the post-combat main phase (I didn't have full control on).
The suggestion: it would be nice if Arena intelligently paused in the end of combat step without needing full control when you have a spell that targets attacking or blocking creatures in your hand.