Sear gives a ridiculous amount of experience. Someone could shoot past 25 just spamming Sear if nobody finishes the hearts.
What if you just made all experience proportionate to energy expenditure? Then there is no incentive to play in any particular way, only to play. The game cannot judge how useful any given move is anyway.
Edit: Strike is even worse. I am gaining almost a whole level each time I use it. I am level 39 now.