Personally speaking, I have a huge problem with Khali being the WHC. My problem is that the WWE had this problem once before, and you'd think they'd have learned the lesson the first time, but you'd be wrong.
The year was 1993, and The Undertaker (in his deadman phase) was running through the roster like a hot knife through butter. WWE needed a big "monster-type" wrestler to enter the promotion and challenge him to a big blowoff match at WM IX. The man selected for the job was Giant Gonzales. Remember him? No? Well, let me briefly describe him for you.
The man was clumsy as could be, couldn't cut a promo to save his ass, and he was still given a Wrestlemania match against Undertaker. To say the match was horrible would be an insult to all things horrible. The match was 6 steps down below horrible, it was that bad. The big man (Gonzales) could barely move, then when he did, he botched moves left and right, and was basically a joke in the ring.
Immediately after his WM match, Gonzales was let go and never seen in a wrestling ring again. This scenario has reared its ugly (no pun intended) head yet again in the form of the Great Khali.
Khali debuted against the Undertaker, attacking him, and basically leaving him for dead (sounds redundant, doesn't it?), by wrestling standards anyway. Soon afterwards, it was announced that they'd face off on Pay Per View. All fine and well, until the moment Khali set foot in a wrestling ring, and proceeded to display copious amounts of suckitude not seen since the days of Ed "Man without a Name" Leslie.
Khali should have experienced the same fate as Gonzales. He should have been shipped back to wherever the hell he came from, because he sure as hell can't wrestle, cuts promos that makes the Ultimate Warrior sound like Albert fricking Einstein, and literally moves so slowly that I could swear I see grass growing under his damned feet.
In short, The Great Khali isn't "Great" and sure as hell does not deserve to be the World's Heavyweight Champion.