Flanking pios are a little bit hilarious though...The pioneer squad does seem a little too strong but also doesent scale well. That might need some tweaking but the important part is not to fuck up the Combat Engineer vs Pioneer balance at the same time. But then again I always thought that CEs should be a bit superior to Pios anyway.
They were originally planned that way, but changed it back in beta. If I remember correctly I believe the CEs were a little more expensive, but where a bit stronger in combat. It gave the soviets too much early power because they would always beat the first engagment with the pios so they took it out. Seems that they are repeating a similar problem again.