Please more Audio edit tools

I am working on some large recorded audio files in Cubasis and the sample editor is not working fast and smooth
It takes a lot of time to zoom in and to finetune the sample start position.

Please give us more tools to work faster and more accurate.
-easy select tools to cut/delete audio parts (not only trim)
-zoom region tool for fast editing
-beat grid shift
-time stretch

And for the new 64bit ipad i think it would be nice to see a more accurate sample preview image
In the parts editor (when zoom to high level it looks like bricks)