I’ve played a game where this was done. USA moved a tank to FWA round 1 and it gets to Iraq round 4. UK has to risk its planes to remove the infantry from Iraq, perhaps a strafing attack. Or USA can follow up with a couple of planes via the same route and probably sacrifice them.
It’s a viable move and if you use the transport around Cape Horn it takes the same time but ties up the transport for longer. This move is definitely more valuable in 2nd Edition than in Balanced Mod though because with the extra money UK gets in BM it can easily enough support 2 mICs.
Downside is that now you have two nations with armies in the Middle East (not counting Anzac and France). This is not as good for attacking the Axis but still pretty good for static defence.
I’m also not too sure about waiting all this time: building the mIC round 5, first units round 6! By this time Moscow can have already fallen but I guess good players should have it living longer.