What should I include in my response about future plans after a course on a soft power visa in Thailand?

I think your initial thoughts reply will be acceptable. You can even elaborate a bit more with exploring other parts of Thailand after.

Recently had this with a client of mine I outlined their plans for immersion in Thai culture and explained their financial perspective. Provide them what your plans are.

Also what type of soft power are you planning to do?

Feel free to shoot me a PM if you want further explanation.

I think it becomes more and more known that there is a group of applicants that think that as soon as they got approved for the visa all requirements end and they can just stay in the country for 5 years.

DTV is not meant for continuous stay, only for periods you do remote work or attend soft power activities.

It looks like they now want to make aware applicants of this.

The only correct answer is to tell your plans, how should we know what your plans are.

You can explain what you want to do after the current activity ends, and when you don't have plans for that period, you don't need a visa for that period.

That is a new one. Asking intentions after the initial course. No idea about best response except maybe what you suggested. Book further courses.

May I know what is your passport?

Did you apply with a 6 -12 month course? Staying 5 years on a short course is what is being looked at. They may give you a METV.