Did you get a chance to try out the assembly kit Muiguel? It was working under beta branch yesterday but seems to have disappeared again. I backed up the Assembly Kit folder though so I could upload it somewhere if you like. I had problems with the variant editor as well as the map editors, plus bob kept telling me it couldn't find game process when trying to build startpos so maybe that's why they took it back down
In case you didn't get a chance to test it or didn't back it up, I've uploaded it. Just make sure to uninstall assembly kit from steam first in case it overwrites it again and place it in the Thrones of Britannia folder. A lot of features didn't work for me but others have said it worked perfectly. https://drive.google.com/open?id=1IW...B_C7f2fmADxMh0