you might want to keep your UI "uncluttered" but believe me, there's a huge penalty for doing so in this game.
I have my UI set up with 7 trays by default. Not every tray is filled with powers but the top three are completely full, then I have others for temp powers, purchasable travel powers, stuff form P2W, Costume powers, a rubber duck, a cutlery set, saucepans, a handy desktop beer fridge, shark repellent spray*, various domestic appliances and a cuddly toy
Think of your trays as your utility belt. You need to take what you need to take. By not making use of the flexibility of the UI you are probably deliberately gimping yourself.
*Not guaranteed effective vs Cap'n Mako