I tried a SS5-DD6-TP8-CA9-CV12-BB15 increment cost for warships.
It allows more units at sea.
My planes were cheaper too (and different in combat values) Fg6 TcB8 StB10
Inf, Art and AAA were added too.
Here is the link with a word document to the modified set-up and units.
I Hope these players aids could help.
http://www.axisandallies.org/forums/index.php?topic=36833.msg1469053#msg1469053