Same elsewhere. I got my 2 licenses renewed in an hour and my 3 IDPs took another hour but only because of having to get more photos and photocopies done.
Earlier this year, I applied for a 10 year Cambodian driver's license, which is useful obviously for Cambodia as well as the rest of Asean and lasts twice as long as a Thai one. I did this because I spend a lot of time in that country and the police in Phnom Penh do hassle foreigners who don't possess a local license, regardless of Asean agreements and supposed recognition of IDPs.
However. I of course also maintain a Thai license as I consider myself a resident here so I renewed my licenses and IDPs all on the same day just over a week ago. Everything went smooth.
If you're taking up residence in Thailand then technically yes, however, on a DTV, due to its requirements to do 6 or 12 monthly border runs then the interpretation may be different. That stated, I have heard that for periods of over 3 months of residence, a Thai license is needed thus even on a DTV you should get one.
It's just another WEF initiative that will make things more complicated for travelers. At least they're exempting their own citizens, unlike a similar version that Australia is attempting to introduce, which will be for everyone (as usual, Australia discriminates against its own citizens). Later this year or next, the ESTA system will start and what a disaster that will be. Finally, the tourism tax (it should be called a foreigner tax because all foreigners will be paying it except for possibly border pass holders) will also come into effect end of this year and will cost 300 Baht for each entry into Thailand.