imo, this visa is cooked. No chance it will continue on in current form with all the unintended applications. Thailand will kill it or they’ll make you resubmit all documents upon re-entry/extension.
Just write a letter of certification from your company on a company letterhead stating you are employed and can work remotely. Doesn’t have the be complicated wording, mine was literally just bullet points.
because it is so new. But they will once things settle down. Lots changing in Thai government as you know. I think they’ll wait for the right time to lodge a complaint.