In reality, applying as a workation may seem more difficult at first, but it is much safer in the long run (many assume they will never be asked to provide proof of ongoing activity which may change and is already happening in rare occasion) and less costly than a soft power approach. You just need to make sure you qualify...
More and more embassies are requesting it. They want to ensure that you can sustain yourself and will not work illegally in Thailand. It may soon become a standard requirement for all Soft Power holders and applicants.