I know this is years old, but to set the record straight, Logic can (and always could) deal with a combination of fade in, fade out and crossfades across a multiple selection.
Also since this thread was started, there are new key commands to apply and remove fades in Logic Pro X:
• Apply Default Crossfade
• Apply Last Edited Fade Again
• Remove Fades
Hey Dave where can these features be found that you mentioned here? This is what I been looking for...