That is some solid feedback! Thank you so much! Some kind of tooltip system for the items is on the list of important things to do but I hadn't thought about silhouettes informing the player that there are indeed things to collect. I'll try to make that happen soon.
The rally call idea is solid too but you're right it would need some pretty strong limitations / drawbacks to prevent it from being overused. I don't actually want to make the player feel "in control" very often haha