the two things you mention, tm47 & tm30 have nothing to do with visa's, they are stand alone requirements(laws), there are probably another 1000 laws you wouldn't be told about when you apply for a visa or enter the country.
Having a work permit is only one of the routes, being married is another route, the commonality is same visa extension of stay for 3 years and tax return receipts.
before brexit, you could travel to any EU country without a passport, and europeans can still travel within EU without passport. ASEAN is akin to EU in some repects.
As the e-mails are auto generated its quite common for these to be treated as spam/junk by your e-mail client and for it to file them straight away unless you have flagged the sender as a contact/not junk.
For most offices, it would be acceptable to have the bank letter, the statement from the bank and photo copies of your bank book pages dated within 7 days of your application, and on the day make a withdrawl (making sure the balance doesnt drop below the required amount), update the bank book, get a copy of the latest page.
agree, but i'm pretty sure your not aware of all the laws that actually exist in your home country. The onus with this scenario is it falls to the visitor to keep on top of it and communicate it when not staying in hotels.