It gets complicated if you're coming and going regularly, even if you happen to spend more than 180 days cumulative total in the country. Thais are bad at math, I can imagine the confusion if you're trying to show records of having spent 220 days in the country in one year, but this is made up on 25 separate entries!
Exactly the same for me. I have my own sole proprietary company, but I didn't provide it for the purposes of my application. Instead, all employment documents were from my employer.
I don't recall the DTV being announced as temporary, though who knows? The 60 day visa exemption is of course temporary, that's pretty obvious when you consider that neighboring Asean countries, which operate on the principle of reciprocity, have not extended a 60 day visa exemption with the possibility of a 30 day extension to Thai nationals. It's a one way flow - Cambodians get it when coming to Thailand, but Thais still get only 14 days when visiting Cambodia.
They'll go back to the old status quo sometime next year.
As for the DTV, hard to say, but like the LTR, I think it's here to stay but is likely to be reformed.