What are the potential issues with doing a second 7-day extension on a SETV in Thailand?

The conversation discusses the implications of applying for a second 7-day extension of a Thailand Special Tourist Visa (SETV) after already receiving a 30-day extension. Concerns include potential negative repercussions such as receiving an additional warning stamp and facing possible issues on future re-entry to the country. Participants mention that one can apply for a regular extension and ask for 7 or 30 days, noting the high cost for minimal additional time. Overall, the response suggests that while the extension is costly, it may not significantly impact future travels.