IMO: no. The best route is enjoying yourself and gaining more experience while diving. Dive in different areas with different diving conditions, see what and where you like, and return there for your DM and/or IDC.
Completely agree. There is a tendency for new divers to suddenly jump into zero-hero porgrammes based upon just a few dives. Indeed you might love it so much that you KNOW it is what you want to do for a living for a while. A lot of Instructors who write on this board also probably felt that way too.
But why not just enjoy the experience first. Find out what it is about diving that you enjoy before embarking on your professional training.
Personally, I would try a few fun dives in places and at schools that you are thinking about training with. AND I wouldn't tell them that you are thinking about becoming a DM or Instructor, then you can get a feel of whether they treat general fun divers well rather than them pandering to you to get the big prize, ie sale of all the courses up to MSDT. Whoop Whoop!
Also dive schools are more inclined to take people they have trained back as Instructors. This would suggest that perhaps it makes sense to do your training in the region in which you would like to work ie if you want to work in Koh Tao then train in Koh Tao. This particularly makes sense in the current economic environment where a lot of instructors are struggling for work.
The downside of that route and the one often brought up by the Pattaya centres is that there is good reason to become an Instructor under more severe conditions. e.g. stronger currents and poor visibility as this will make you a safer better Instructor. I can't fault this line of reasoning either.
Enjoy your diving!