It's not that the scout is too powerful, it's that other classes are either too weak or enable him.
- Probably revert medic speed buff
- Arrows allow more heals to be dumped into scouts during fights, with soldiers able to get burst healing from arrows. Arrows need a rework imo.
- Shotgun pocket needs to be viable again to move more power back into that class.
None of these changes actually change scout directly, but then again it's not like scout has actually gotten any buffs directly.