Allow nesting to better organize the info. I'm using Datavault and the top level is Category with Type under that and Items under that.
So for my Category of "Financial" I have "Bank Accounts, Credit Cards, Brokerage, etc..".. Then under "Bank Accounts" are all of my accounts with account info, login, PIN, contact info, etc...
That makes it so much easier to find things that belong together. I suppose I could create titles like "Financial/Bank Accounts", but that's a bit awkward and I would still have to view through a list instead of a category to quickly find what I want.