@bakerbei
You dont really need the sub, the figher in schotland makes things interesting for germany.
Adding a DD off gibraltar is nice keeps that cruiser alive. Or at least forces germany to send 2 or more subs and even then its pretty risky battle for germany.
You can also put a sub off scotland. Combined with a plane it could make things interesting. Especially since germany has to buy a carrier to attack like you mentioned.
With just 2 subs and 7 air the UK can scramble 3 air.
Their air can only hit your air. With the BB or a DD in 110 the UK air can hit the BB or the subs making scramble a lot worst.
The first strike doesnt to anything in 110 anyway, the first hit will be on the BB which can hit back. Only if they make 2 hits does it make a difference, would you put a bid in a place where 1/9 times it makes a small difference?
Putting it in SZ91 will make a much bigger difference, even putting it with the fleet off schotland would be better.
Interesting things:
Add a art in alexandria and a mech or tank in egypt and destroy tobruk at the same time as destroying the italian fleet.
Put a transport off south afrika so you can take iraq round 1, or if doing taranto put the troops from malta on greece ( your planes from the carrier can land ) and still do your things around east afrika.
If your opponent allows, add an AA gun to china, japan has to attack with planes so you can get 3 shots. Its a gambit though.