7zip opens ISO's, and freeware is available to mount iso's.
Getting rid of the explorer interface its nothing new, I've had to kill explorer & and hence start bar, desktop icons & etc, to kill an occassional malware, windows works fine without it. threw windows store has been available since windows ME, and was never popular.
The only"new" feature is the stupid ipad/mobile interface that its set as the default.
"shuffle along people, nothing to see here".