I know it's probably too late to change anything like this that would significantly change gameplay, but what if there was an energy bar for Power mode (which would be used up by things such as power jumping, speed sprinting, melee, weapon/recoil stabilising, etc) and energy bars would regenerate at a much slower rate than the currently do?

It would make the game much more tactical and skill based as you would need to carefully consider when and how to use suit abilities, and it brings back the need for proper energy management