How do I keep Store, Maps App (or others) from starting automatically in backgr?

I noticed that when I log on to my user profile Maps and Store app load in the background and use too much memory and cpu for my liking. Is there a way to keep that from happening without loosing the apps completely?

I also noticed that there used to be many projects/threads that tried to get rid of as much metro as possible. Where have they all gone? Nobody actually uses these crappy apps, right? I'd love an option to use (boot option or different user profile) Windows 8.1 without all the metro crap to have as much power left for games as possible. I noticed that when I rename twinui.dll that saves quite some memory but explorer shell won't load.

Could anybody help me out with these two problems?

Thanks

 

doesnt anybody have suggestions?