Definitely make a dimensional traveller since even with the limits you put on it there is sill worlds like marvel zombies and some worlds from warhamamer 40k
Narrowing his eyes slightly, the elderly man adopted a grim expression as he stated, "The contract has been established. Now, tell me, Thomas Dale Jansen. Where would you like to begin your 'adventure'...?"
What about combining her beast instincts and observation haki?
Her Observation Haki had allowed her to dodge attacks blindfolded and occasionally attack back but that was the limit to what she could do with it right now, all that it seemed to provide her was a better awareness of her surroundings but when matched up with her Beast Instinct, she was able to gain more battlefield awareness and better reactions.