Uh, the red crosses on the berserk pack, medkit, and stimpack are gone, it's replaced with this logo instead:
Those are the medkit etc sprites from the "BFG Edition". If you want the original red cross medkits, use the original (pre-BFG Edition) WADs. If you want the newer green cross ones, use the WADs from the Unity ports. The files are otherwise the same, they just made those changes for legal reasons (IIRC the International Red Cross organization is strict about people using their symbol)