So far I'm not a huge fan of the HP tweak.
- I've had a couple runs against a 1000 ton freighter and it always takes 2 torps now.
- the destroyer, also at 1000 tons, only takes 1. So you have a freighter that is taking more damage to sink than a warship of comparable size.
Ok, maybe the 1 torp kills are too easy and so we need the gameplay element of higher HP to keep us honest in the tonnage category... maybe it will grow on me.
Nonetheless, I'm sure many will like your HP mod, and good work all the same!