I don't foresee any change to global Trade HQ, with the exception of bug fixes (hopefully!).
I believe the GT HQ is designed the way it is to make people become impatient and spend Simoleons to finish things quicker.
The good news is that Epic buildings / Speed-up tokens is something that will replace GT HQ in the long run. Once we get around 30+ epic buildings, we'll just be speeding up production and building our own items instead of hunting them. That only leaves us with the issue of industrial material supply shortage, which might lead us back to GT HQ to search for more sooner.
