The only other file that may have an indication on what is occuring is in the bitraider folder is a file called swtor_swtor if that can be attached.
I gather you have ensured launcher.exe, swtor.exe and brwc.exe are listed in all the antivirus and firewall exception lists
Non streaming should definitely help in this case though, and is as you say almost a new download.
Can you attach the swtor_swtor file found in the bitraider folder ?
It says the file is too large, should I look for something specific to copy here so you can check?
One thing to do when you go to C:\Program Files (x86)\Electronic Arts\BioWare\Star Wars-The Old Republic delete any patch folders
back to the file in the bitraider folder, delete the swtor_swtor file and start the launcher and try the game again it should create a new log which wont be as large and should attach ok
