it should be forbidden IMHO
I lost a game due to fact that enemies were able to use it - and with more numerous armies I was not able to continue asymmetric warfare os specialized troops and skills vs quantity and activity
idea is simple- start using it and you will see bytro will ban it once more.
I hope someone will l find a way how to counter it as i would like to know how to counter it too. I am
betting that for some guys it was the only way to win maps so I did not want it to stay that way.