Concerning the last question, there is already a list of ideas at [4], but maybe more ideas or requests are now arising.
Great work Sascha! I'd like to be able to: * recategorise packages online, e.g. we have "Compilers/interpreters" "Code generation" "Composition" "Control" "Monads" "Cryptography" "Codec" "Data" "Data structures" "Foreign" "Language" "Scripting" "Interfaces" "User interfaces" - a first step would be to warn, or prevent people creating new categories. * find all packages that depend on a package (the opposite of the current info about all packages a given package depends on) and use that info to rank by popularity -- Don