Much like the "Wallet" section of a diver's profile, it would be great to have a "Gear Locker" section where details of owned gear can be tracked. Right now gear can be added to each dive, which is great. A more detailed and self contained gear log would be even better.
I think it would be great to have the option to upload photos of gear, enter purchase and service dates, purchase price, location, serial numbers, etc. Integrated with the dive log, gear items can be selected as being used on a dive.