Had the idea for consistent interaction usage for any kind "items". At least anything the player can pick-up. Right now its just the knife/weapon. Though throwable junk, keys, usables, etc would be nice to have and be maintained by a consistent system of, "you need a free hand to pick-up" and items need to be stores in the limited hot-bar or dropped to have said free hand.
TLDR I started making a UI hot-bar and an animation of it sliding in and out of the bottom of the screen.
UE5 First person dishonored-like stealth navigation and combat.
Round out basic mechanics and systems to then build a robust and polished level design to play around it.