Obito is gonna be fodder against kakashi if he doesn't start using rinnengan
Kakashi has a great control of kamui now, he can go in and out of the dimension, he can kamui a whole clon and atack from the 2 dimensions, obito isn't a lot without kamui.
Lets imagine kakashi sends a clone to the other dimension, then raikiri's obito, obito goes ghost mode but ups, raikiri for the other dimension, that's not very hard for kakashi.
Obito's mokuton is very dangerous, but kakashi isn't fodder, he can easely dodge it, he's quick, he has sharingan and he can kamui himself.
Big fireball, kakashi can counter with water jutsus, hiding under the earth (as he did with itachi), or simply kamui it, he kamui'ed a whole bijuu, he could kamui a fireball.
If obito doesn't start using preta, deva and asura path, he is pretty fodder against kakashi, his kamui and his arsenal of jutsus.