Scotland turn 2 seems like a good risk if you are planning a G3 invasion anyway. If you skip a G2Scotland, you bring 26 land units on G3. If you drop 6 off on G2 (1aagun), they sink your fleet, you lose 2 planes, they likely lose 5. Your 10 transports are safe in 113 due to scramble. Your land units are safe, since air hit your fleet, and land only battle with too many units risks taking out the 5 land units and getting stuck in Scotland. Even with the fleet destroyed the 10 transports plus the 5 land units = 25 land units against London, minus 5 defending UK planes lost.
If they ignore the fleet, you get 6 more land units on G3 then otherwise.
If they attack the 5 land units in Scotland, they risk 1 plane to AA, and risk over hitting as 6 planes should get 3 hits, but if they get 4 and a land unit hits….or if the planes hit 3 times, but the land units hit twice also…5 hits total means whatever hit Scotland is stuck there. Uk has to send at least 3 land units to protect its planes from being hit…so worst case scenario, UK pulls out 3 units to prevent 5 extra Germans. The 2 units gained risks 1 defending plane on average. You still have 26 land units to attack London with at least 2 fewer land units (assumes 2 were hit clearing/attacking Scotland) or if Scotland is ignored, 31 land units.
That many dice rolls always leaves the possibility for disaster and I suspect neither attack will occur.
I’ll drop this discussion at this point, as I’m late to the conversation and I’ve made my point. Styles vary.