^^^I agree, especially since that was the ingredient that set Assault apart from any other preworkout product for me and the one thing that made ALL the difference!
The current removal of Suma Root from Assault (and Recon) was made for NSF approval after it was recently publicized that Suma Root exhibits similar characteristics to various banned compounds, thus there is the possibility of testing for a false positive when being drug tested.
Notes on this in
http://anabolicminds.com/forum/muscle-pharm/172875-rosies-impressions-green.html.
~Rosie~