Frankly it is irrelivent whether Google displays more information on their maps. Once Google denied the use of their maps for turn by turn navigation, they ceased to be a long term option for iOS.
Not true. Google was more than happy to give it to Apple, but Apple was tired of paying Google royalties on every iPhone they sold when Google was such a big competitor of theirs. So they decided to invest and come up with their own solution, which is what we see now. Apple is now Google-free, except for supporting their search engine of course, which they'll never get away from.