One other thing to keep in mind as well, Uk can move DD and Cruiser to SZs 37 & 42 to prevent a J2 capture of Sumatra, along with the deadzoning of Java that makes DEI dangerous to japan all game long.
One other thing I noticed, if Japan controls all of asia and the Philippians, not counting and DEI territories, they only make 2 more income than the US. With that in mind, I don’t think I would mind sacrificing India to give the allies a stronger hold in DEI with naval buys as UK.