Stuka arrives too early or is highly overperforming for its cost when it arrives to the field. In 4v4 this is the easy I win button when opponent happens to be brits, soviet in t2 or USF with support weapons. It hard counters all the allied support weapon teams and often allows axis inf to walk over any mg due to death loop of mg team. Overall in current state of 4v4 artillery seems to be the go to choice with no negative trade-offs as there is no proper way to counter a stuka. What makes it worse when several okw players go for it or even two stukas per player.
As per countering it, infantry can't flank it in 4v4 maps due to every sector being easily covered with mg or infantry counter, light vehicles are costly and require several hits to take out stuka giving it more than enough time to just back off to base area (t-70, stuart, scout car, m20, AEC) and by the time mediums are available axis usually has more than enough inf and OKW at guns to tear them apart. To balance it out I propose one of following changes: