I did not see any signs of any reliability issues. The reatraints are similar Pantheon's, but the seats are a bit wider, and a bit more accommodating. If you cannot ride Pantheon due to your stomach being too big, you probably will have trouble with TT2, however if your issue is your thighs are too big for Pantheon, you will probably be fine on TT2. If you are on the West coast, the restraints are similar to Manta at Sea World San Diego, but the sides of the seats do not wrap around as far. These trains suffer from none of the issues that plague Thunderbolt at Luna Park.
One of the first reporters to ride the ride live on air said she experienced whiplash, I think I have a different definition of whiplash than she does. I don't think she would like Maverick. The initial launch is not as strong as I was expecting, you build up to the top speed rather than being kicked by a giant. Great ride, just don't expect the old launch. In summary, I'll get as many rides in on Kingda Ka as I can while I still can.