Just my opinions on this,
Well, I usually go with the classic build AC, transport with the expectation that the US will land figters on it. If by some miracle, my BB survives then I would just buy lots of transports. I think this provides the bet opportunity for an Allied victory.
I generally don’t wait for UK2 to build a Navy as I think the AC with transport, and US fighters should be enough to hold off a second round German attack, at least I’ve never had anyone try to attack on G2 with this. Also, I have plans I want to do and I think its a mistake on the Allies to go slow. They need to stall the Axis as soon as they can, certainly before the Axis reach around 75 ipcs.
I really don’t like the Allied bomber stategy, I think its basically a wash between Germany and UK as far as IPCs and I think Russia won’t be able to hold off both Japan and a weakened but still strong Germany without British troops early as the USA would be hard pressed to both take back Africa and reinforce Karelia before Japan gets rolling in Asia.
I sometimes play the India IC gambit and I find I usually still win, but it takes a bit longer. I will never put an IC on a territory with less than 3 ipcs as you just cannot produce enough to make it worthwhile IMO. With regards to the India transport, there are lots of possibilities. I usually try the Egypt counter attack to hold Africa longer (unless Germany builds in Libya for an extra turn). Sometimes I run it to Australia and try to sneak in with the Australia troops to take Sumatra or even the Phillipines if the Jap player isn’t paying attention (low odds, unless there aren’t any troops there). At least I can distract the Jap Navy with it. Or sometimes I will move it to the N. Sea (takes a while) to help discharge inf to Europe.
I agree that there is a great number of possibilities available for UK to start the game. :)