I like him as much as selphie. Not at all.

His sphere path is meh to me, I prefer Tidus, rikku and lulu's path. Never tried upping him with rikku's path tough.

OP I love Kimahri, Had him in my main Party Especially since he has the wonderful ability of lancet from the start, After I finished His grid I brought him through Yuna's to make him like a Paladin/Dragoon with his heal's and then after that I put him through Rikku's grid or LuLu's to make him either a quick Paladin or have him do some serious Damage.
I love Kimahri.

He was kinda useless to me. Granted I only made it to halfway through the game before I found out the HD version was coming out, and just stopped playing it altogether. Does he get better in the later half of the game?

Took me reading to findout you u were talkn bout.

Dont really remember the direction i took. Wht i dont do is cross abilities except ultima with Lulu. And some Auron abilities with Kimarhri.

I usually made him into a 2nd Auron. Typically I would have Auron, Kimahri, and Yuna as my main 3. Powerhouse through with healing. Some fights I would face off against fast enemies and I would just wait until I get lucky rather then switch lol. Of course I have had multiple FFX playthroughs and I change every time I play it. Really just depends, only character I never lvl much is Rikku, because she just seems to always be weak no mater what you do. Late game everyone is strong so that does not count.

Rikku i would mix Lulu and Yuna abilities for when ur in the water and the missions u unlock when u catch all the feens.

I spend so much time maxing each character out. I hope its easier to break damage and manna limits.