Playing as her i quite enjoy her and her hopping mechanics, I find she works best with allies that like and are capable of long drawn out fights like
Also of note is she synergizes very well with good
players and can kite around while her egg forms reviving.
Playing with her, ive only played with/against one kindred each and they both went the devourer route and had hot steamy loads dumped on them, shes an ad caster like urgot and trying to build her like vayne or cait will get you instantly deleted as these guys found out the hard way.
My recommended build setup, black cleaver is pretty core for the CD, movespeed, HP, and armor shred effects, besides that you should emphasize hp resist survival builds with exception to blade of the king and you should avoid devourers like the plague and instead focus on getting warriors or cinderhulk jung items since ad casters scale well with both armor pen and survivability.
So in short build her like you would urgot but substitute manamune out with blade of the king.
No i don't feel the need to ban it and the 4 times i picked her i was only questioned about it once and they accepted my reasoning for picking her into our team comp, told them she has the same hunting playstyle as eve and even her ult is usually used in the same way as counter engage/ a tool to turn the tables on a fight to win it.