Should I include a letter of intent and bank statements when applying for a Thai DTV visa?

The applicant is seeking advice on whether to include additional documents such as a letter of intent and bank statements when applying for the Thai DTV visa. While the official requirements list only essential documents like proof of location and financial proof of 500,000 THB, other applicants suggest that including extra documentation may be beneficial, as they have successfully submitted similar documents. However, the applicant is unsure where to submit these additional documents, as there seems to be no designated submission area.