why were maps removed in 0.7?

Why did we have to take away lots of the maps when version 0.7 came out. Here are some tracks to remember from the older versions. On The Beach, Race Track, Art Museum, Doing Dishes, Growns Bow, Geeko Peek and Little Volcano. I know there are more old tracks then this, but those were only some of them. Where are some of the old karts like Evil Tux and Penny. All of the old tracks that did not make it to version 0.7 should be addons, EVEN THE REALLY OLD ONES!!!!! There is no need to downgrade Supertuxkart by taking away so many of the tracks.
Mod: write useful subjects, please.
Mod: write useful subjects, please.