Making transports defenseless makes more sense. I remember playing classic and having fleets of 1 or 2 battleships, a carrier and a stack of 10+ transports. No one would attack your fleet because they would never get to the high dollar stuff. That is, unless they had a huge stack of transports to throw in as fodder, which is also ridiculous.
You should have to protect your transports with warships, or suffer losing them and not transporting your troops. Someone mentioned Japan taking those little Pacific islands and how it’s not worth it to divert your fleet to protect the transports. Well, you could do that or simply write off those transports. Yeah, it sucks wasting 7 IPCs but if you get the islands you need (I’m thinking that 5 island NO for Japan) then perhaps it is worth losing a few transports in the long run. Plus, since now those guys have no transport, you have garrisons on those islands and the Allies will have to invest more to take them back. It just depends on your needs I think.
One downfall of defenseless transports that I don’t like is when you have a whole stack of transports and a single plane or ship takes them all out. Perhaps a good idea would be to limit the killing of defenseless transports to something like 3 per attacking unit (warship, sub or plane).
For example: The US has goofed and left 5 unescorted transports sitting in SZ 91. Germany sees this but has only 1 U-boat sitting in SZ 105. Germany also has a bomber sitting on the air base in Paris. Germany wanted to SBR London with his bomber.
Now, if Germany wants to sink all 5 US transports, he will have to send the U-boat AND the bomber. If Germany wants to SBR London with his bomber, he can just send the U-boat but will sink ONLY 3 of the US transports.
In summary, every 3 transports require 1 attacking unit to sink them. 1-3 transports=1 attacker, 4-6 TT=2 attackers, 7-9 TT=3 attackers, 10-12 TT=4 attackers, and so on.
Attacking units can be submarines, destroyers, cruisers, battleships, fighters, tac bombers and bombers.
Doesn’t that sound better than just one single attack unit being able to kill a whole stack of transports?