Or just edit all the weapons, upgrades and crew to cost 0 renown....
About the only thing I DO have working is the ability to unlock upgrades for use at the start. As far as I know, each upgrade does not change once it is released other than for its renown expense to decrease over time. So without going nuts and changing every single date you just change the Current (if it has one) and the first date below (should match first number from Current) to something like 1941-12-01. Be sure to do the same for the Ammunition file to match the weapons you unlocked. I haven't messed with Torps yet, but my Dec 10th mission has my Gar decked out with SJ-1 and SV radars and a 5.25" deck gun (WHICH RULES!).
Now.... if someone can tell me how to increase the ammo per magazine correctly, I'd appreciate it.
