The only problem w/ your scenario is that most of us don't own a jet or train and common carriers don't allow you to set up a 24" TV on board. You see an iPad is meant to be a mobile device... you take it anywhere b/c it's light but powerful. In your version you are tethered to a fixed location. Some people are always on the go and just looking for a few minutes to kill or decompress.
But let me tell you how gaming w/ an iPad + controller works since you aren't that creative it appears:
Many cases double as stands so no need to hold the iPad up. Both hands are free for a controller such as the
iMpulse