Game would be more tactical and fun to play without infantry running wild killing tanks which is BTW ridiculous and unrealistic: infantry running at a TANK and shooting rockets, thats StarCraft, not a WW2 theme RTS.
You know, that is exactly what happened in WWII. Infantry running at tanks (usually out of covered positions from the side of the tank or behind it) and throwing shaped charges, magnetic mines, and molotovs* at it. The only inventions that changed that a bit were the Faustpantrone/Panzerfaust and the Bazooka (with the Panzerschreck being a scaled up copy).
The ubiquity of the Faustpatrone for example forced the Soviets to completely rework their combined arms tactics, and adopt a much more infantry-based tank doctrine than at the start of the war.
*adding a little bit of soap-water to the petrol allows the burning mixture to get through the seals around the hatches, letting liquid fire drop into the inside of the tank. Does a great job at changing the focus of the crew so that you can place a magnetic mine right where it counts.