I can only answer your first question, and the information could be out of date but I doubt it. They will only employ Thai nationals. This airline still has strong links with SAS which has been the case for decades. At one time a number of Scandinavian pilots flew for them but not any more. If they did need expats I suspect they would talk to SAS first.
It is possible they may need contract pilots from time to time.
Sorry if it's not good news, but the situation could change. I certainly hope it does within the next 20 years.
Not sure about the money, but last time I asked it was a lot less than flying in Europe.