This thread's a good example of different things working for different people. I personally have a hard time making short-range Medium Infantry work for me. I find short range to be a dangerous place for them, since the combination of slow MOV, 1 Wound, mediocre ARM/PH leaves them vulnerable to templates. I find myself primarily pairing Medium Infantry with big SWC weapons like HMGs/MULTI Snipers, so they can fill more a fire superiority role. But if players are finding success with short-range Medium Infantry teams, that's awesome.