Transport + 2 Infantry = 14 IPC
Destroyer = 12 IPC
Destroyers are cheaper. Especially when their cost is compounded over subsequent rounds!
9 Destroyers = 108 IPC (barely 4 rounds pay for England, less than 3 rounds pay for America - hardly a burden when spread over 10 rounds)
Cost of shore assaults: 3 IPC (infantry)
Meanwhile, Transports cost minimum of 32 IPC for England and require 8 units to maximize their efficiency per round (minimum 24 IPC, but realistically at least 30 IPC probably 32 IPC.)
30 IPC over 10 rounds = 300 IPC. Not 108 IPC. That’s almost three times the cost!
Technology should cost about 17-18 IPC to achieve on average. (1 in 6 chance at 5 IPC per chance.)
So your choice:
Shore Bombardment + Destroyers for (rounding) 170 IPC (1 ground unit + existing transport + 9 destroyers + technology for 10 rounds)
or
Standard amphibious assaults for (rounding) 340 IPC (4 transports + 8 ground units per round for 10 rounds)
Bear in mind, for 30 IPC you are getting 4 infantry, 2 artillery, 2 armor each round. That means, with the battleship bombardment you are expecting 3 hits each assault doing about 9 IPC in damage each round. (Punch=20 with the BB added in.)
Versus:
9 Destroyers + Battleship (this assumes all your starting destroyers were magically destroyed and you only bought the 9) + technology + an infantry would do: 5 hits each assault for about 15 IPC in damage each round. (Punch=32 with the BB and DDs added in.)
So destroyers + technology is cheaper, it’s safer (what idiot is attacking 9 destroyers, battleship, transport with 5 fighters and a bomber?), it does more damage to the enemy, has significantly less risk to you and allows you to build up more men and units in reserve for massive hits later down the road (or just to land in friendly territory to bolster defenses.)
So, given that it’s overwhelmingly smarter to go the tech/destroyer route, why should we force Germany to stack gobs of men in France? At least S. Europe and Germany can only be attacked from one sea zone and you can put a submarine in it to stop shore bombardments from at least England. France would require you to build a complex AND build two submarines a round to stop England from bombarding you. (Note, America would never be stopped from bombardment. England would always be able to clear the Sea Zone allowing America to bombard.)
And when you give up after routinely losing 10-14 infantry a round trying to defend France from 2 attacking infantry, you will have given the Allies a primo Industrial Complex in W. Europe! Not to mention a blasted Victory City and probably the game.
Anyway, the funny thing is, all the supporters of Victory Cities seem appalled at the idea of actually having to HOLD 9 Victory Cities giving the other side a chance to liberate before the end of the game.
So I have to ask: Are your strategies so bad and your moves so dependent on luck of the dice that you need to be able to snipe a victory city or two in order to win your games? Obviously you have no faith in your ability to hold them, which tells me you want to be able to land one unit in a victory city to steal a victory out of the jaws of utter defeat.
It’s a cruel way to put it, but honestly speaking, the rule should have always been take the cities AND HOLD THEM denying any liberation attempts for a full turn. Then you have proven you are in a superior tactical position. Otherwise, you are just proving that your opponent is better than you are and you cannot hold your own, so you’ll use tricks to steal a victory.