I don’t get the hate for Adv Artillary. For the US/UK it is a wonderful money saver and probably more useful than mech inf in the long haul being that the majority of your land forces are just being used for amphibious assaults. For Russia it is probably more useful than long range airplanes It is good for any allied power, but kind of worthless for any Axis power.
I would also say that Germany could probably use super subs liberaly to put decent pressure on allied shipping. You have something that attacks way better than a fighter and ignores enemy airplanes so it can get to the transport ships quickly all while being 4 IPC’s cheaper. I’m not saying it’s a game breaking tech for Germany, but still I can see the use. Really I would rather have super subs with Germany or Italy than Japan.
Also the UK starts off with 3 AA’s, that alone makes radar not worthless for the UK. 2 US fighters on Australia, and a stiff defense in Persia and all the sudden you may stall Japan for an extra turn or two more than you would have normally. Also, I am used to the German bomber(s) being on france to put pressure on allied shipping, when they aren’t being used for an attack I am used to seeing the UK get bombed; radar would end that. Once again, not game breaking, but hardly worthless for the UK.
As for warbonds, i don’t see how extra cash to spend could ever be considerd a bad thing. This is the most flexible tech out there. That being said if you spent 30+ IPC’s to get it, I could see how it wouldn’t pay off.
Also whoever said paratroopers were underated: anyone who finds it a useless tech/ non game changing concept ought to re evaluate this tech. Paratroopers can make everywhere in the world (except europe) your personal playground, this can change the entire landscape and strat of everyone once this tech is recieved by any power. I do think it benefits Russia the least, simply for the fact that Russia would have to buy a bomber it may not be able to afford.