There is a sort of a rough workaround which i have used in the past to get around this issue... It works these days thanks to the change in 10.1 which allows you to have more than one Drummer Track per Project which you couldn't easily do in prior versions of LPX without resorting to some odd working methods
1) Load up two drummer tracks with identical settings
2) Drummer 1 turn off fills (Set all the way over to the left and click on fill's lock)
3) Drummer 2 turn on fills...
4) Use automation at start of pattern to unmute Drummer 1 and mute Drummer 2
4) Use automation one bar in (or whenever you wish... ) to mute drummer 1 and at same time unmute Drummer 2
So long as you make the same drummer settings for each Drummer track.. you can now get rid of unneeded crash cymbals at the start of a pattern but retain other drummer functionality.... without it being noticeable...
You can use the same trick to accomplish all kinds of little tricks with drummer.. like layering patterns, switching back to no fills at any point in a track.... changing to HHs instead of Cyms at odd points in the pattern...and so on...
Here's an example screenshot with automation...
The other method idea i had involved the use of the producer+ kits and their individual channels..but unfortunately Logic just used overhead and room mics to record the cymbals so you cannot easily mute / unmute / volume automate those without it sticking out in the mix...