Keynote - extreme file sizes - will this ever be fixed?

Keynote file sizes are extreme. Is anything being done for future versions to fix this issue?

(The master is one issue: adding an image to a master and using this master repeatedly thought-out the presentation increases the KN file size by huge margins --> the master "copies" to each slide rather than "referencing". Also, if you import and then crop a full image within KN, it retains the info for the entire image. I get that in case I may want to go back and resize it... but I'd rather re-import the original than have the file size explode. KN, sadly, still has a long way to go to become a pro presenter software.)